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Isnard S, L’Huillier L, Paul ALD, Munzinger J, Fogliani B, Echevarria G, Erskine PD, Gei V, Jaffré T, van der Ent A. Novel Insights Into the Hyperaccumulation Syndrome in Pycnandra (Sapotaceae). FRONTIERS IN PLANT SCIENCE 2020; 11:559059. [PMID: 33013977 PMCID: PMC7509057 DOI: 10.3389/fpls.2020.559059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 08/13/2020] [Indexed: 06/11/2023]
Abstract
The discovery of nickel hyperaccumulation, in Pycnandra acuminata, was the start of a global quest in this fascinating phenomenon. Despite recent advances in the physiology and molecular genetics of hyperaccumulation, the mechanisms and tolerance of Ni accumulation in the most extreme example reported to date, P. acuminata, remains enigmatic. We conducted a hydroponic experiment to establish Ni tolerance levels and translocation patterns in roots and shoots of P. acuminata, and analyzed elemental partitioning to gain insights into Ni regulation. We combined a phylogeny and foliar Ni concentrations to assess the incidence of hyperaccumulation within the genus Pycnandra. Hydroponic dosing experiments revealed that P. acuminata can resist extreme Ni concentrations in solution (up to 3,000 µM), and dosing at 100 µM Ni was beneficial to growth. All plant parts were highly enriched in Ni, but the latex had extreme Ni concentrations (124,000 µg g-1). Hyperaccumulation evolved independently in only two subgenera and five species of the genus Pycnandra. The extremely high level of Ni tolerance is posited to derive from the unique properties of laticifers. The evolutionary and ecological significance of Ni hyperaccumulation in Pycnandra is discussed in light of these findings. We suggest that Ni-rich laticifers might be more widespread in the plant kingdom and that more investigation is warranted.
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Affiliation(s)
- Sandrine Isnard
- AMAP, Université Montpellier, IRD, CIRAD CNRS, INRAE, Montpellier, France
- AMAP, IRD, Herbier de Nouvelle-Calédonie, Nouméa, New Caledonia
| | - Laurent L’Huillier
- Institut Agronomique néo-Calédonien (IAC), Equipe ARBOREAL (AgricultuRe BiOdiveRsité Et vAlorisation), Paita, New Caledonia
| | - Adrian L. D. Paul
- Centre for Mined Land Rehabilitation, Sustainable Minerals Institute, The University of Queensland, St Lucia, QLD, Australia
| | - Jérôme Munzinger
- AMAP, Université Montpellier, IRD, CIRAD CNRS, INRAE, Montpellier, France
| | - Bruno Fogliani
- Institut Agronomique néo-Calédonien (IAC), Equipe ARBOREAL (AgricultuRe BiOdiveRsité Et vAlorisation), Paita, New Caledonia
- Institute of Exact and Applied Sciences (ISEA), Université de la Nouvelle-Calédonie, Nouméa, New Caledonia
| | - Guillaume Echevarria
- Centre for Mined Land Rehabilitation, Sustainable Minerals Institute, The University of Queensland, St Lucia, QLD, Australia
- Université de Lorraine – INRAE, Laboratoire Sols et Environnement, Vandoeuvre-lès-Nancy, France
| | - Peter D. Erskine
- Centre for Mined Land Rehabilitation, Sustainable Minerals Institute, The University of Queensland, St Lucia, QLD, Australia
| | - Vidiro Gei
- Centre for Mined Land Rehabilitation, Sustainable Minerals Institute, The University of Queensland, St Lucia, QLD, Australia
| | - Tanguy Jaffré
- AMAP, Université Montpellier, IRD, CIRAD CNRS, INRAE, Montpellier, France
- AMAP, IRD, Herbier de Nouvelle-Calédonie, Nouméa, New Caledonia
| | - Antony van der Ent
- Centre for Mined Land Rehabilitation, Sustainable Minerals Institute, The University of Queensland, St Lucia, QLD, Australia
- Université de Lorraine – INRAE, Laboratoire Sols et Environnement, Vandoeuvre-lès-Nancy, France
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202
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A Review on the Beneficial Role of Silicon against Salinity in Non-Accumulator Crops: Tomato as a Model. Biomolecules 2020; 10:biom10091284. [PMID: 32906642 PMCID: PMC7563371 DOI: 10.3390/biom10091284] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 08/30/2020] [Accepted: 09/02/2020] [Indexed: 02/06/2023] Open
Abstract
Salinity is an abiotic stress that affects agriculture by severely impacting crop growth and, consequently, final yield. Considering that sea levels rise at an alarming rate of >3 mm per year, it is clear that salt stress constitutes a top-ranking threat to agriculture. Among the economically important crops that are sensitive to high salinity is tomato (Solanum lycopersicum L.), a cultivar that is more affected by salt stress than its wild counterparts. A strong body of evidence in the literature has proven the beneficial role of the quasi-essential metalloid silicon (Si), which increases the vigor and protects plants against (a)biotic stresses. This protection is realized by precipitating in the cell walls as opaline silica that constitutes a mechanical barrier to the entry of phytopathogens. With respect to Si accumulation, tomato is classified as a non-accumulator (an excluder), similarly to other members of the nightshade family, such as tobacco. Despite the low capacity of accumulating Si, when supplied to tomato plants, the metalloid improves growth under (a)biotic stress conditions, e.g., by enhancing the yield of fruits or by improving vegetative growth through the modulation of physiological parameters. In light of the benefits of Si in crop protection, the available literature data on the effects of this metalloid in mitigating salt stress in tomato are reviewed with a perspective on its use as a biostimulant, boosting the production of fruits as well as their post-harvest stability.
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203
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Feigl G, Varga V, Molnár Á, Dimitrakopoulos PG, Kolbert Z. Different Nitro-Oxidative Response of Odontarrhena lesbiaca Plants from Geographically Separated Habitats to Excess Nickel. Antioxidants (Basel) 2020; 9:E837. [PMID: 32906835 PMCID: PMC7554898 DOI: 10.3390/antiox9090837] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 09/04/2020] [Accepted: 09/05/2020] [Indexed: 12/20/2022] Open
Abstract
Odontarrhena lesbiaca is an endemic species to the serpentine soils of Lesbos Island (Greece). As a nickel (Ni) hyperaccumulator, it possesses an exceptional Ni tolerance; and it can accumulate up to 0.2-2.4% Ni of its leaves' dry weight. In our study, O. lesbiaca seeds from two geographically separated study sites (Ampeliko and Loutra) were germinated and grown on control and Ni-containing (3000 mg/kg) soil in a rhizotron system. Ni excess induced significant Ni uptake and translocation in both O. lesbiaca ecotypes and affected their root architecture differently: plants from the Ampeliko site proved to be more tolerant; since their root growth was less inhibited compared to plants originated from the Loutra site. In the roots of the Ampeliko ecotype nitric oxide (NO) was being accumulated, while the degree of protein tyrosine nitration decreased; suggesting that NO in this case acts as a signaling molecule. Moreover, the detected decrease in protein tyrosine nitration may serve as an indicator of this ecotype's better relative tolerance compared to the more sensitive plants originated from Loutra. Results suggest that Ni hypertolerance and the ability of hyperaccumulation might be connected to the plants' capability of maintaining their nitrosative balance; yet, relatively little is known about the relationship between excess Ni, tolerance mechanisms and the balance of reactive nitrogen species in plants so far.
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Affiliation(s)
- Gábor Feigl
- Department of Plant Biology, University of Szeged, Közép fasor 52, H6726 Szeged, Hungary; (V.V.); (Á.M.); (Z.K.)
| | - Viktória Varga
- Department of Plant Biology, University of Szeged, Közép fasor 52, H6726 Szeged, Hungary; (V.V.); (Á.M.); (Z.K.)
| | - Árpád Molnár
- Department of Plant Biology, University of Szeged, Közép fasor 52, H6726 Szeged, Hungary; (V.V.); (Á.M.); (Z.K.)
| | | | - Zsuzsanna Kolbert
- Department of Plant Biology, University of Szeged, Közép fasor 52, H6726 Szeged, Hungary; (V.V.); (Á.M.); (Z.K.)
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204
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Spielmann J, Ahmadi H, Scheepers M, Weber M, Nitsche S, Carnol M, Bosman B, Kroymann J, Motte P, Clemens S, Hanikenne M. The two copies of the zinc and cadmium ZIP6 transporter of Arabidopsis halleri have distinct effects on cadmium tolerance. PLANT, CELL & ENVIRONMENT 2020; 43:2143-2157. [PMID: 32445418 DOI: 10.1111/pce.13806] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 05/16/2020] [Accepted: 05/16/2020] [Indexed: 06/11/2023]
Abstract
Plants have the ability to colonize highly diverse environments. The zinc and cadmium hyperaccumulator Arabidopsis halleri has adapted to establish populations on soils covering an extreme range of metal availabilities. The A. halleri ZIP6 gene presents several hallmarks of hyperaccumulation candidate genes: it is constitutively highly expressed in roots and shoots and is associated with a zinc accumulation quantitative trait locus. Here, we show that AhZIP6 is duplicated in the A. halleri genome. The two copies are expressed mainly in the vasculature in both A. halleri and Arabidopsis thaliana, indicative of conserved cis regulation, and acquired partial organ specialization. Yeast complementation assays determined that AhZIP6 is a zinc and cadmium transporter. AhZIP6 silencing in A. halleri or expression in A. thaliana alters cadmium tolerance, but has no impact on zinc and cadmium accumulation. AhZIP6-silenced plants display reduced cadmium uptake upon short-term exposure, adding AhZIP6 to the limited number of Cd transporters supported by in planta evidence. Altogether, our data suggest that AhZIP6 is key to fine-tune metal homeostasis in specific cell types. This study additionally highlights the distinct fates of duplicated genes in A. halleri.
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Affiliation(s)
- Julien Spielmann
- InBioS-PhytoSystems, Functional Genomics and Plant Molecular Imaging, University of Liège, Liège, Belgium
| | - Hassan Ahmadi
- Department of Plant Physiology, University of Bayreuth, Bayreuth, Germany
| | - Maxime Scheepers
- InBioS-PhytoSystems, Functional Genomics and Plant Molecular Imaging, University of Liège, Liège, Belgium
| | - Michael Weber
- Department of Plant Physiology, University of Bayreuth, Bayreuth, Germany
| | - Sarah Nitsche
- Department of Plant Physiology, University of Bayreuth, Bayreuth, Germany
| | - Monique Carnol
- InBioS-PhytoSystems, Laboratory of Plant and Microbial Ecology, University of Liège, Liège, Belgium
| | - Bernard Bosman
- InBioS-PhytoSystems, Laboratory of Plant and Microbial Ecology, University of Liège, Liège, Belgium
| | - Juergen Kroymann
- CNRS, AgroParisTech, Ecologie Systématique et Evolution, Université Paris-Saclay, Orsay, France
| | - Patrick Motte
- InBioS-PhytoSystems, Functional Genomics and Plant Molecular Imaging, University of Liège, Liège, Belgium
| | - Stephan Clemens
- Department of Plant Physiology, University of Bayreuth, Bayreuth, Germany
| | - Marc Hanikenne
- InBioS-PhytoSystems, Functional Genomics and Plant Molecular Imaging, University of Liège, Liège, Belgium
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205
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Cassayre L, Hazotte C, Laubie B, Carvalho W, Simonnot MO. Combustion of nickel hyperaccumulator plants investigated by experimental and thermodynamic approaches. Chem Eng Res Des 2020. [DOI: 10.1016/j.cherd.2020.06.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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206
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Zhou C, Xiao X, Guo Z, Peng C, Zeng P, Fosua Bridget A. Physiological responses, tolerance efficiency, and phytoextraction potential of Hylotelephium spectabile (Boreau) H. Ohba under Cd stress in hydroponic condition. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2020; 23:80-88. [PMID: 32723076 DOI: 10.1080/15226514.2020.1797628] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A sand hydroponic experiment with different concentrations of 0, 5, 10, 20, 40 mg L-1 Cd was used to study the growth and physiological response of Hylotelephium spectabile (Boreau) H. Ohba. and its phytoextraction potential for Cd. The results showed that total plant biomass under 5 mg L-1 Cd treatment was slightly affected. The content of malondialdehyde (MDA) in leaf exposed to Cd was higher, and the POD and CAT activity exhibited a positive response to the low level of Cd addition (5 mg·L-1). The photosynthesis pigments were slightly inhibited, and the ultrastructure of chloroplast remained intact after treatment with 10 mg L-1 Cd. The maximum leaf Cd content (603 mg·kg-1) was found in 5 mg L-1 Cd treatment, then decreased with the Cd level increased. The maximum Cd content in the shoots far exceeds the threshold level (100 mg kg-1) for a Cd-hyperaccumulator plant with the value of translocation factor (TFshoot/root) for Cd reaching up to 5.62. In conclusion, H. spectabile showed normal growth and physiological response and high shoot Cd accumulation under 5 mg L-1 Cd stress, which made it to be a good candidate for phytoextraction of low-level Cd polluted environment.
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Affiliation(s)
- Cong Zhou
- School of Metallurgy and Environment, Central South University, Changsha, China
| | - Xiyuan Xiao
- School of Metallurgy and Environment, Central South University, Changsha, China
| | - Zhaohui Guo
- School of Metallurgy and Environment, Central South University, Changsha, China
| | - Chi Peng
- School of Metallurgy and Environment, Central South University, Changsha, China
| | - Peng Zeng
- School of Metallurgy and Environment, Central South University, Changsha, China
| | - Ataa Fosua Bridget
- School of Metallurgy and Environment, Central South University, Changsha, China
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207
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Domka A, Rozpądek P, Ważny R, Jędrzejczyk RJ, Hubalewska-Mazgaj M, Gonnelli C, Benny J, Martinelli F, Puschenreiter M, Turnau K. Transcriptome Response of Metallicolous and a Non-Metallicolous Ecotypes of Noccaea goesingensis to Nickel Excess. PLANTS (BASEL, SWITZERLAND) 2020; 9:E951. [PMID: 32731524 PMCID: PMC7464472 DOI: 10.3390/plants9080951] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 07/24/2020] [Accepted: 07/27/2020] [Indexed: 11/23/2022]
Abstract
Root transcriptomic profile was comparatively studied in a serpentine (TM) and a non-metallicolous (NTM) population of Noccaea goesingensis in order to investigate possible features of Ni hyperaccumulation. Both populations were characterised by contrasting Ni tolerance and accumulation capacity. The growth of the TM population was unaffected by metal excess, while the shoot biomass production in the NTM population was significantly lower in the presence of Ni in the culture medium. Nickel concentration was nearly six- and two-fold higher in the shoots than in the roots of the TM and NTM population, respectively. The comparison of root transcriptomes using the RNA-seq method indicated distinct responses to Ni treatment between tested ecotypes. Among differentially expressed genes, the expression of IRT1 and IRT2, encoding metal transporters, was upregulated in the TM population and downregulated/unchanged in the NTM ecotype. Furthermore, differences were observed among ethylene metabolism and response related genes. In the TM population, the expression of genes including ACS7, ACO5, ERF104 and ERF105 was upregulated, while in the NTM population, expression of these genes remained unchanged, thus suggesting a possible regulatory role of this hormone in Ni hyperaccumulation. The present results could serve as a starting point for further studies concerning the plant mechanisms responsible for Ni tolerance and accumulation.
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Affiliation(s)
- Agnieszka Domka
- Małopolska Centre of Biotechnology, Jagiellonian University in Kraków, Gronostajowa 7a, 30-387 Kraków, Poland; (P.R.); (R.W.); (R.J.J.)
| | - Piotr Rozpądek
- Małopolska Centre of Biotechnology, Jagiellonian University in Kraków, Gronostajowa 7a, 30-387 Kraków, Poland; (P.R.); (R.W.); (R.J.J.)
| | - Rafał Ważny
- Małopolska Centre of Biotechnology, Jagiellonian University in Kraków, Gronostajowa 7a, 30-387 Kraków, Poland; (P.R.); (R.W.); (R.J.J.)
| | - Roman Jan Jędrzejczyk
- Małopolska Centre of Biotechnology, Jagiellonian University in Kraków, Gronostajowa 7a, 30-387 Kraków, Poland; (P.R.); (R.W.); (R.J.J.)
| | | | - Cristina Gonnelli
- Department of Biology, University of Florence, via G. La Pira 4, 50121 Florence, Italy; (C.G.); (F.M.)
| | - Jubina Benny
- Department of Agricultural, Food and Forest Sciences—Università degli Studi di Palermo, 90128 Palermo, Italy;
| | - Federico Martinelli
- Department of Biology, University of Florence, via G. La Pira 4, 50121 Florence, Italy; (C.G.); (F.M.)
| | - Markus Puschenreiter
- Department of Forest and Soil Sciences, Institute of Soil Research, University of Natural Resources and Life Sciences Vienna, Konrad-Lorenz Straße 24, 3430 Tulln, Austria;
| | - Katarzyna Turnau
- Institute of Environmental Sciences, Jagiellonian University in Kraków, Gronostajowa 7, 30-387 Kraków, Poland;
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208
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Xu W, Xiang P, Liu X, Ma LQ. Closely-related species of hyperaccumulating plants and their ability in accumulation of As, Cd, Cu, Mn, Ni, Pb and Zn. CHEMOSPHERE 2020; 251:126334. [PMID: 32169705 DOI: 10.1016/j.chemosphere.2020.126334] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 02/20/2020] [Accepted: 02/24/2020] [Indexed: 06/10/2023]
Abstract
Soil contamination by heavy metals is widespread. Heavy metals of concern include As, Cd, Cu, Cr, Mn, Ni, Pb, and Zn. Hyperaccumulating plants are efficient in accumulating metals, which have potential to remediate metal-contaminated soils. Species of closely-related hyperaccumulating plants have been used to screen their ability in metal accumulation. However, there is limited evidence to show that closely-related plant species have similar ability in metal accumulation. Using a global database of 664 hyperaccumulating plants, we constructed a phylogeny of hyperaccumulating plants of As, Cd, Cu, Cr, Mn, Ni, Pb, and Zn. We evaluated the phylogenetic randomness of plants hyperaccumulating different metals by comparing the minimum number of trait-state changes across the phylogenetic tree to a null model. Based on the D value, we evaluated whether closely-related plants tend to accumulate similar metals. Based on the Blomberg's K and Pagel's λ, we tested whether closely-related plants have similar ability in metal accumulation. Excluding Cd and Pb, closely-related plant species tend to accumulate similar metal, however, its ability cannot be predicted based on phylogenetic relations except Ni. Therefore, we concluded that focusing on species of closely-related hyperaccumulating plants can help to screen new hyperaccumulators although their ability could be different.
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Affiliation(s)
- Wumei Xu
- Institute of Environmental Remediation and Human Health, Southwest Forestry University, Kunming, 650224, China; School of Energy and Environment Science, Yunnan Normal University, Kunming, 650500, China
| | - Ping Xiang
- Institute of Environmental Remediation and Human Health, Southwest Forestry University, Kunming, 650224, China
| | - Xue Liu
- Institute of Environmental Remediation and Human Health, Southwest Forestry University, Kunming, 650224, China.
| | - Lena Q Ma
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China; Institute of Environmental Remediation and Human Health, Southwest Forestry University, Kunming, 650224, China.
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209
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Trace Elements in Edible Flowers from Italy: Further Insights into Health Benefits and Risks to Consumers. Molecules 2020; 25:molecules25122891. [PMID: 32586028 PMCID: PMC7355664 DOI: 10.3390/molecules25122891] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 06/12/2020] [Accepted: 06/18/2020] [Indexed: 12/11/2022] Open
Abstract
The use of edible flowers in cooking dates back to ancient times, but recently it is gaining success among the consumers, increasingly attentive to healthy and sustainable foods of high quality, without neglecting taste, flavour, and visual appeal. The present study aims to deepen the knowledge regarding the mineral composition of edible flowers, an aspect not widely investigated in scientific literature. The concentrations of Cd, Co, Cu, Fe, Mn, Ni, Pb, Sr, V, and Zn have been determined by Inductively Coupled Plasma Optical Emission Spectrometry (ICP OES) in flowers belonging to a wide variety of species. The study highlights that some floral species are characterized by significantly higher concentrations of certain trace elements, e.g., the flowers of Acmella oleracea for Mn, those of basil (Ocimum basilicum) and of pumpkins (Cucurbita moschata and C. pepo) for Cu and Sr, and those of orange daylily (Hemerocallis fulva) for Ni. Potentially toxic elements are present at low concentrations, often below the limit of the detection for Cd, Co, Ni, V. In all samples, Cd and Pb are well below the maximum permitted levels in foodstuffs. It can be concluded that the edible flowers analyzed can be considered a good source of essential elements and do not present risks for the consumer health as for the mineral composition.
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210
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Huang R, Dong M, Mao P, Zhuang P, Paz-Ferreiro J, Li Y, Li Y, Hu X, Netherway P, Li Z. Evaluation of phytoremediation potential of five Cd (hyper)accumulators in two Cd contaminated soils. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 721:137581. [PMID: 32163732 DOI: 10.1016/j.scitotenv.2020.137581] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 02/20/2020] [Accepted: 02/24/2020] [Indexed: 06/10/2023]
Abstract
A phytoextraction experiment with five Cd hyperaccumulators (Amaranthus hypochondriacus, Celosia argentea, Solanum nigrum, Phytolacca acinosa and Sedum plumbizincicola) was conducted in two soils with different soil pH (5.93 and 7.43, respectively). Most accumulator plants grew better in the acidic soil, with 19.59-39.63% higher biomass than in the alkaline soil, except for S. plumbizincicola. The potential for a metal-contaminated soil to be cleaned up using phytoremediation is determined by the metal uptake capacity of hyperaccumulator, soil properties, and mutual fitness of plant-soil relationships. In the acidic soil, C. argentea and A. hypochondriacus extracted the highest amount of Cd (1.03 mg pot-1 and 0.92 mg pot-1, respectively). In the alkaline soil, S. plumbizincicola performed best, mainly as a result of high Cd accumulation in plant tissue (541.36 mg kg-1). Most plants achieved leaf Cd bioconcentration factor (BCF) of >10 in the acidic soil, compared to <4 in the alkaline soil. Soil Cd availability was chiefly responsible for such contrasting metal extraction capacity, with 5.02% fraction and 48.50% fraction of total Cd being available in the alkaline and acidic soil, respectively. In the alkaline soil, plants tended to increase rhizosphere soil available Cd mainly through excreting more low molecular weight organic acids, not through changing the soil pH. In the acidic soil, plants slightly decreased soil available Cd. Those species which have high Ca, Zn, Fe uptake capacity extract more Cd from soil, and a positive correlation was found between the concentrations of Cd and Ca, Zn, Fe in leaves. Soil available Ca2+, Mg2+, SO42-, Cl- did not play a key role in Cd uptake by plants. In summary, acidic soil was of higher potential to recover from Cd contamination by phytoextraction, while in the alkaline soil, S. plumbizincicola showed potential for Cd phytoextraction.
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Affiliation(s)
- Rong Huang
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Meiliang Dong
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Peng Mao
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Ping Zhuang
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | | | - Yongxing Li
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Yingwen Li
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Xiaoying Hu
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Pacian Netherway
- School of Engineering, RMIT University, Melbourne 3000, Australia
| | - Zhian Li
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458B, China.
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211
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Oliveira de Araujo T, Isaure MP, Alchoubassi G, Bierla K, Szpunar J, Trcera N, Chay S, Alcon C, Campos da Silva L, Curie C, Mari S. Paspalum urvillei and Setaria parviflora, two grasses naturally adapted to extreme iron-rich environments. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2020; 151:144-156. [PMID: 32220787 DOI: 10.1016/j.plaphy.2020.03.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 02/17/2020] [Accepted: 03/12/2020] [Indexed: 06/10/2023]
Abstract
Paspalum urvillei and Setaria parviflora are two plant species naturally adapted to iron-rich environments such as around iron mines wastes. The aim of our work was to characterize how these two species cope with these extreme conditions by comparing them with related model species, Oryza sativa and Setaria viridis, that appeared to be much less tolerant to Fe excess. Both Paspalum urvillei and Setaria parviflora were able to limit the amount of Fe accumulated within roots and shoots, compared to the less tolerant species. Perls/DAB staining of Fe in root cross sections indicated that Paspalum urvillei and Setaria parviflora responded through the build-up of the iron plaque (IP), suggesting a role of this structure in the limitation of Fe uptake. Synchrotron μXRF analyses showed the presence of phosphorus, calcium, silicon and sulfur on IP of Paspalum urvillei roots and μXANES analyses identified Fe oxyhydroxide (ferrihydrite) as the main Fe form. Once within roots, high concentrations of Fe were localized in the cell walls and vacuoles of Paspalum urvillei, Setaria parviflora and O. sativa whereas Setaria viridis accumulated Fe in ferritins. The Fe forms translocated to the shoots of Setaria parviflora were identified as tri-iron complexes with citrate and malate. In leaves, all species accumulated Fe in the vacuoles of bundle sheath cells and as ferritin complexes in plastids. Taken together, our results strongly suggest that Paspalum urvillei and Setaria parviflora set up mechanisms of Fe exclusion in roots and shoots to limit the toxicity induced by Fe excess.
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Affiliation(s)
- Talita Oliveira de Araujo
- Universidade Federal de Viçosa, Laboratório de Anatomia Vegetal, Viçosa, 36570-900, Brazil; BPMP, Univ Montpellier, CNRS, INRAE, Institut Agro, Montpellier, France
| | - Marie-Pierre Isaure
- Universite de Pau et des Pays de l'Adour, E2S UPPA, CNRS, IPREM UMR 5254, Hélioparc, 64053 Pau, France
| | - Ghaya Alchoubassi
- Universite de Pau et des Pays de l'Adour, E2S UPPA, CNRS, IPREM UMR 5254, Hélioparc, 64053 Pau, France
| | - Katarzyna Bierla
- Universite de Pau et des Pays de l'Adour, E2S UPPA, CNRS, IPREM UMR 5254, Hélioparc, 64053 Pau, France
| | - Joanna Szpunar
- Universite de Pau et des Pays de l'Adour, E2S UPPA, CNRS, IPREM UMR 5254, Hélioparc, 64053 Pau, France
| | - Nicolas Trcera
- Synchrotron SOLEIL, l'Orme des Merisiers Saint Aubin BP48, 91192, Gif-sur-Yvette Cedex, France
| | - Sandrine Chay
- BPMP, Univ Montpellier, CNRS, INRAE, Institut Agro, Montpellier, France
| | - Carine Alcon
- BPMP, Univ Montpellier, CNRS, INRAE, Institut Agro, Montpellier, France
| | | | - Catherine Curie
- BPMP, Univ Montpellier, CNRS, INRAE, Institut Agro, Montpellier, France
| | - Stephane Mari
- BPMP, Univ Montpellier, CNRS, INRAE, Institut Agro, Montpellier, France.
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212
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Peng D, Liu Z, Su X, Xiao Y, Wang Y, Middleton BA, Lei T. Spatial distribution of heavy metals in the West Dongting Lake floodplain, China. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2020; 22:1256-1265. [PMID: 32236176 DOI: 10.1039/c9em00536f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The protection of Dongting Lake is important because it is an overwintering and migration route for many rare and endangered birds of East Asia and Australasia, but an assessment of heavy metal contamination in West Dongting Lake is lacking. A total of 75 sediment samples (five sites × three sediment depths) were collected in West Dongting Lake in January 2017 to assess the spatial distribution and ecological risk of heavy metals in West Dongting Lake. Heavy metal values varied by sediment depth including As, Cd, Zn, and Cu, with the depth giving an indication of recent vs. historical deposition. The major input of Hg, Cu, and Ni may come from continued anthropogenic activities related to regional industrial activities within the Yuan River and Li River, whereas the major sources of Cd pollution may be from agricultural fertilizers.
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Affiliation(s)
- Dong Peng
- Beijing Forestry, School of Nature Conservation, 35 Tsinghua East Road, Haidian Distinct, Beijing 100083, P.R. China. and Beijing Forestry, School of Nature Conservation, P.R. China.
| | - Ziyu Liu
- Beijing Forestry, School of Nature Conservation, 35 Tsinghua East Road, Haidian Distinct, Beijing 100083, P.R. China.
| | - Xinyue Su
- Beijing Forestry, School of Nature Conservation, 35 Tsinghua East Road, Haidian Distinct, Beijing 100083, P.R. China.
| | - Yaqian Xiao
- Beijing Forestry, School of Nature Conservation, 35 Tsinghua East Road, Haidian Distinct, Beijing 100083, P.R. China. and Beijing Normal University, No. 19, XinJieKouWai St., HaiDian District, Beijing 100875, P. R. China
| | - Yuechen Wang
- Beijing Forestry, School of Nature Conservation, 35 Tsinghua East Road, Haidian Distinct, Beijing 100083, P.R. China.
| | - Beth A Middleton
- U.S. Geological Survey, Wetland and Aquatic Research Center, 700 Cajundome Boulevard, Lafayette, LA 70506 USA.
| | - Ting Lei
- Beijing Forestry, School of Nature Conservation, 35 Tsinghua East Road, Haidian Distinct, Beijing 100083, P.R. China.
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213
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Shen S, Chen J, Chang J, Xia B. Using bioenergy crop cassava ( Manihot esculenta) for reclamation of heavily metal-contaminated land. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2020; 22:1313-1320. [PMID: 32425052 DOI: 10.1080/15226514.2020.1768512] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Heavy metal contamination of agricultural lands may give rise to health risks by cultivation and consumption of food crops from such lands, as well as result in economic loss. Phytoremediation is an eco-friendly and cost-effective approach to restore contaminated soil. However, the restoration process is slow and its sustainability is difficult to maintain. Bioenergy crops may provide alternative economic benefits to agriculture sector and reduce the risks associated with transfering heavy metals into food webs. In this study, a field experiment was carried out to determine the level of reclamation that would be attained in severely heavy metal-contaminated land by planting cassava (Manihot esculenta), a bioenergy crop. The results showed that cassava could grow well on the derelict land, with a fresh tuber yield of 23.13-26.22 t ha-1 in one growing season, which could potentially produce 3680-4160 L ha-1 bioethanol. The economic income of the cassava was estimated to be 11.6-13.1 × 103 CNY ha-1. Among the cassava tissues, metal concentrations were lowest in the tuber. The soil fertility and acidity were ameliorated after cassava plantation, and the mobile and bioavailable metal fractions in the soils were decreased. The cultivation of cassava as a renewable energy crop appears applicable for sustainable utilization and reclamation of heavy metal-contaminated land.
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Affiliation(s)
- Shili Shen
- School of Ecology and Environmental Science & Yunnan Key Laboratory for Plateau Mountain Ecology and Restoration of Degraded Environments, Yunnan University, Kunming, China
| | - Jinquan Chen
- School of Ecology and Environmental Science & Yunnan Key Laboratory for Plateau Mountain Ecology and Restoration of Degraded Environments, Yunnan University, Kunming, China
| | - Junjun Chang
- School of Ecology and Environmental Science & Yunnan Key Laboratory for Plateau Mountain Ecology and Restoration of Degraded Environments, Yunnan University, Kunming, China
| | - Beicheng Xia
- School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou, China
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214
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do Nascimento CWA, Hesterberg D, Tappero R, Nicholas S, da Silva FBV. Citric acid-assisted accumulation of Ni and other metals by Odontarrhena muralis: Implications for phytoextraction and metal foliar distribution assessed by μ-SXRF. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 260:114025. [PMID: 32004964 DOI: 10.1016/j.envpol.2020.114025] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 12/27/2019] [Accepted: 01/19/2020] [Indexed: 06/10/2023]
Abstract
Odontarrhena muralis is one of the most promissing plant species for Ni phytomining, and soil amendments can further increase its Ni phytoextraction ability. Here we investigated whether Ni phytomining/phytoremediation using this Ni hyperaccumulator can benefit from applying citric acid to a serpentine soil that is naturally enriched in Ni (>1000 mg kg-1). Synchrotron micro X-ray fluorescence (μ-SXRF) was used to image Ni and other metal distributions in whole fresh leaves of O. muralis. Leaf Ni accumulation in plants grown on citric acid-amended soil increased up to 55% while Co, Cr, Fe, Mn, and Zn concentrations were 4-, 14-, 6-, 7- and 1.3-fold higher than the control treatment. O. muralis presented high bioconcentration factors (leaf to soil concentration ratio) to Ni and Zn whereas Cr was seemingly excluded from uptake. The μ-SXRF images showed a uniform distribution of Ni, preferential localization of Co in the leaf tip, and clear concentration of Mn in the base of trichomes. The citric acid treatments strongly increased the Co fluoerescence intensity in the leaf tip and altered the spatial distribution of Mn across the leaf, but there was no difference in Ni fluorescence counts between the trichome-base region and the bulk leaf. Our data from a serpentine soil suggests that citrate treatment enhances Ni uptake, but Co is excreted from leaves even in low leaf concentrations, which can make Co phytoming using O. muralis unfeasible in natural serpentine soils.
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Affiliation(s)
| | - Dean Hesterberg
- North Carolina State University, Crop and Soil Sciences Department, Raleigh, NC, 27695, USA
| | - Ryan Tappero
- Brookhaven National Laboratory, NSLS-II, Upton, NY, 11973, USA
| | - Sarah Nicholas
- Brookhaven National Laboratory, NSLS-II, Upton, NY, 11973, USA
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215
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Balafrej H, Bogusz D, Triqui ZEA, Guedira A, Bendaou N, Smouni A, Fahr M. Zinc Hyperaccumulation in Plants: A Review. PLANTS (BASEL, SWITZERLAND) 2020; 9:E562. [PMID: 32365483 PMCID: PMC7284839 DOI: 10.3390/plants9050562] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 04/10/2020] [Accepted: 04/14/2020] [Indexed: 12/15/2022]
Abstract
Zinc is an essential microelement involved in many aspects of plant growth and development. Abnormal zinc amounts, mostly due to human activities, can be toxic to flora, fauna, and humans. In plants, excess zinc causes morphological, biochemical, and physiological disorders. Some plants have the ability to resist and even accumulate zinc in their tissues. To date, 28 plant species have been described as zinc hyperaccumulators. These plants display several morphological, physiological, and biochemical adaptations resulting from the activation of molecular Zn hyperaccumulation mechanisms. These adaptations can be varied between species and within populations. In this review, we describe the physiological and biochemical as well as molecular mechanisms involved in zinc hyperaccumulation in plants.
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Affiliation(s)
- Habiba Balafrej
- Laboratoire de Biotechnologie et Physiologie Végétales, Centre de biotechnologie végétale et microbienne biodiversité et environnement, Faculté des Sciences, Université Mohammed V de Rabat, 10000 Rabat, Maroc
| | - Didier Bogusz
- Equipe Rhizogenèse, Institut de Recherche pour le Développement, Unité Mixte de Recherche Diversité Adaptation et développement des Plantes, Université Montpellier 2, 34394 Montpellier, France
| | - Zine-El Abidine Triqui
- Laboratoire de Biotechnologie et Physiologie Végétales, Centre de biotechnologie végétale et microbienne biodiversité et environnement, Faculté des Sciences, Université Mohammed V de Rabat, 10000 Rabat, Maroc
| | - Abdelkarim Guedira
- Laboratoire de Biotechnologie et Physiologie Végétales, Centre de biotechnologie végétale et microbienne biodiversité et environnement, Faculté des Sciences, Université Mohammed V de Rabat, 10000 Rabat, Maroc
| | - Najib Bendaou
- Laboratoire de Biotechnologie et Physiologie Végétales, Centre de biotechnologie végétale et microbienne biodiversité et environnement, Faculté des Sciences, Université Mohammed V de Rabat, 10000 Rabat, Maroc
| | - Abdelaziz Smouni
- Laboratoire de Biotechnologie et Physiologie Végétales, Centre de biotechnologie végétale et microbienne biodiversité et environnement, Faculté des Sciences, Université Mohammed V de Rabat, 10000 Rabat, Maroc
| | - Mouna Fahr
- Laboratoire de Biotechnologie et Physiologie Végétales, Centre de biotechnologie végétale et microbienne biodiversité et environnement, Faculté des Sciences, Université Mohammed V de Rabat, 10000 Rabat, Maroc
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216
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Delhaye G, Bauman D, Séleck M, Ilunga wa Ilunga E, Mahy G, Meerts P. Interspecific trait integration increases with environmental harshness: A case study along a metal toxicity gradient. Funct Ecol 2020. [DOI: 10.1111/1365-2435.13570] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Guillaume Delhaye
- Laboratoire d'Ecologie Végétale et Biogéochimie Université Libre de Bruxelles Bruxelles Belgium
- Environmental Change Institute School of Geography and the Environment University of Oxford Oxford UK
| | - David Bauman
- Laboratoire d'Ecologie Végétale et Biogéochimie Université Libre de Bruxelles Bruxelles Belgium
- Environmental Change Institute School of Geography and the Environment University of Oxford Oxford UK
| | - Maxime Séleck
- Department of Forest, Nature and Landscape Biodiversity and Landscape Unit University of LiègeGembloux Agro‐Bio Tech Gembloux Belgium
| | - Edouard Ilunga wa Ilunga
- Ecology, Restoration Ecology and Landscape Research Unit Faculty of Agronomy University of Lubumbashi Lubumbashi Democratic Republic of Congo
| | - Grégory Mahy
- Department of Forest, Nature and Landscape Biodiversity and Landscape Unit University of LiègeGembloux Agro‐Bio Tech Gembloux Belgium
| | - Pierre Meerts
- Laboratoire d'Ecologie Végétale et Biogéochimie Université Libre de Bruxelles Bruxelles Belgium
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217
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Li Q, Wang H, Wang H, Wang Z, Li Y, Ran J, Zhang C. Re-investigation of cadmium accumulation in Mirabilis jalapa L.: evidences from field and laboratory. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:12065-12079. [PMID: 31983000 DOI: 10.1007/s11356-020-07785-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Accepted: 01/21/2020] [Indexed: 06/10/2023]
Abstract
Mirabilis jalapa L. was identified as a cadmium (Cd) hyperaccumulator, but data were mainly from laboratory conditions. The main aim of the present study was to confirm whether M. jalapa is a Cd hyperaccumulator by field survey and laboratory experiment. The field survey was conducted at 3 sites and 66 samples were collected, and the results showed that although M. jalapa did not exhibit any visible damage when growing on soil containing 139 mg Cd kg-1, a low concentration of Cd (11.85 ± 3.45 mg kg-1) in its leaves was observed. Although the translocation factor (TF) was up to 3.24 ± 0.42, the bioconcentration factor (BCF) was only 0.13 ± 0.07. The Cd accumulation in leaves of Lanping (LP, contaminated site) and Kunming (KM, clean site) populations reached 93.88 and 81.76 mg kg-1 when artificially spiked soil Cd was 175 mg kg-1, respectively. The BCFs of LP and KM populations were 0.55 and 0.48, and the TFs of the two populations were 3.98 and 4.15, respectively. Under hydroponic condition, the Cd concentration in young leaves of LP and KM populations was 78.5 ± 0.8 and 46.3 ± 1.2 mg kg-1 at 5 mg L-1 Cd treatment, respectively. Furthermore, a significantly positive correlation between tissue Cd concentration and total Cd, CaCl2-extractable Cd, and TCLP-Cd (toxicity characteristic leaching procedure) in soil was established. Therefore, M. jalapa had constitutional characteristics for Cd tolerance and accumulation, but it was not a Cd hyperaccumulator.
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Affiliation(s)
- Qinchun Li
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, Yunnan, China
- Yunnan Key Lab of Soil Carbon Sequestration and Pollution Control, Kunming, 650500, Yunnan, China
| | - Hongbin Wang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, Yunnan, China.
- Yunnan Key Lab of Soil Carbon Sequestration and Pollution Control, Kunming, 650500, Yunnan, China.
| | - Haijuan Wang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, Yunnan, China
- Yunnan Key Lab of Soil Carbon Sequestration and Pollution Control, Kunming, 650500, Yunnan, China
| | - Zhongzhen Wang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, Yunnan, China
- Yunnan Key Lab of Soil Carbon Sequestration and Pollution Control, Kunming, 650500, Yunnan, China
| | - Yang Li
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, Yunnan, China
- Yunnan Key Lab of Soil Carbon Sequestration and Pollution Control, Kunming, 650500, Yunnan, China
| | - Jiakang Ran
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, Yunnan, China
- Yunnan Key Lab of Soil Carbon Sequestration and Pollution Control, Kunming, 650500, Yunnan, China
| | - Chunyu Zhang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, Yunnan, China
- Yunnan Key Lab of Soil Carbon Sequestration and Pollution Control, Kunming, 650500, Yunnan, China
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218
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Höreth S, Pongrac P, van Elteren JT, Debeljak M, Vogel-Mikuš K, Weber M, Braun M, Pietzenuk B, Pečovnik M, Vavpetič P, Pelicon P, Arčon I, Krämer U, Clemens S. Arabidopsis halleri shows hyperbioindicator behaviour for Pb and leaf Pb accumulation spatially separated from Zn. THE NEW PHYTOLOGIST 2020; 226:492-506. [PMID: 31898330 DOI: 10.1111/nph.16373] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 12/01/2019] [Indexed: 05/14/2023]
Abstract
Lead (Pb) ranks among the most problematic environmental pollutants. Background contamination of soils is nearly ubiquitous, yet plant Pb accumulation is barely understood. In a survey covering 165 European populations of the metallophyte Arabidopsis halleri, several field samples had indicated Pb hyperaccumulation, offering a chance to dissect plant Pb accumulation. Accumulation of Pb was analysed in A. halleri individuals from contrasting habitats under controlled conditions to rule out aerial deposition as a source of apparent Pb accumulation. Several elemental imaging techniques were employed to study the spatial distribution and ligand environment of Pb. Regardless of genetic background, A. halleri individuals showed higher shoot Pb accumulation than A. thaliana. However, dose-response curves revealed indicator rather than hyperaccumulator behaviour. Xylem sap data and elemental imaging unequivocally demonstrated the in planta mobility of Pb. Highest Pb concentrations were found in epidermal and vascular tissues. Distribution of Pb was distinct from that of the hyperaccumulated metal zinc. Most Pb was bound by oxygen ligands in bidentate coordination. A. halleri accumulates Pb whenever soil conditions render Pb phytoavailable. Considerable Pb accumulation under such circumstances, even in leaves of A. thaliana, strongly suggests that Pb can enter food webs and may pose a food safety risk.
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Affiliation(s)
- Stephan Höreth
- Department of Plant Physiology, University of Bayreuth, 95440, Bayreuth, Germany
| | - Paula Pongrac
- Department of Plant Physiology, University of Bayreuth, 95440, Bayreuth, Germany
- Jožef Stefan Institute, 1000, Ljubljana, Slovenia
| | | | - Marta Debeljak
- National Institute of Chemistry, 1000, Ljubljana, Slovenia
| | - Katarina Vogel-Mikuš
- Jožef Stefan Institute, 1000, Ljubljana, Slovenia
- Biotechnical Faculty, University of Ljubljana, 1000, Ljubljana, Slovenia
| | - Michael Weber
- Department of Plant Physiology, University of Bayreuth, 95440, Bayreuth, Germany
| | - Manuel Braun
- Department of Plant Physiology, University of Bayreuth, 95440, Bayreuth, Germany
| | - Björn Pietzenuk
- Molecular Genetics and Physiology of Plants, Ruhr University Bochum, 44801, Bochum, Germany
| | | | | | | | - Iztok Arčon
- Jožef Stefan Institute, 1000, Ljubljana, Slovenia
- University of Nova Gorica, 5000, Nova Gorica, Slovenia
| | - Ute Krämer
- Molecular Genetics and Physiology of Plants, Ruhr University Bochum, 44801, Bochum, Germany
| | - Stephan Clemens
- Department of Plant Physiology, University of Bayreuth, 95440, Bayreuth, Germany
- Bayreuth Center for Ecology and Environmental Research, University of Bayreuth, 95440, Bayreuth, Germany
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219
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Affiliation(s)
- Antony van der Ent
- Centre for Mined Land Rehabilitation, Sustainable Minerals Institute, The University of Queensland, Australia.
| | - Hugh H Harris
- Department of Chemistry, The University of Adelaide, Australia.
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220
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Lopez S, van der Ent A, Sumail S, Sugau JB, Buang MM, Amin Z, Echevarria G, Morel JL, Benizri E. Bacterial community diversity in the rhizosphere of nickel hyperaccumulator plant species from Borneo Island (Malaysia). Environ Microbiol 2020; 22:1649-1665. [PMID: 32128926 DOI: 10.1111/1462-2920.14970] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 02/27/2020] [Accepted: 03/01/2020] [Indexed: 12/01/2022]
Abstract
The Island of Borneo is a major biodiversity hotspot, and in the Malaysian state of Sabah, ultramafic soils are extensive and home to more than 31 endemic nickel hyperaccumulator plants. The aim of this study was to characterize the structure and the diversity of the rhizosphere bacterial communities of several of these nickel hyperaccumulator plants and factors that affect these bacterial communities in Sabah. The most abundant phyla were Proteobacteria, Acidobacteria and Actinobacteria. At family level, Burkholderiaceae and Xanthobacteraceae (Proteobacteria phylum) were the most abundant families in the hyperaccumulator rhizospheres. Redundancy analysis based on soil chemical analyses and relative abundances of the major bacterial phyla showed that abiotic factors of the studied sites drove the bacterial diversity. For all R. aff. bengalensis rhizosphere soil samples, irrespective of studied site, the bacterial diversity was similar. Moreover, the Saprospiraceae family showed a high representativeness in the R. aff. bengalensis rhizosphere soils and was linked with the nickel availability in soils. The ability of R. aff. bengalensis to concentrate nickel in its rhizosphere appears to be the major factor driving the rhizobacterial community diversity unlike for other hyperaccumulator species.
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Affiliation(s)
- Séverine Lopez
- Université de Lorraine, INRAE, Laboratoire Sols et Environnement, 54000, Nancy, France
| | - Antony van der Ent
- Université de Lorraine, INRAE, Laboratoire Sols et Environnement, 54000, Nancy, France.,Centre for Mined Land Rehabilitation, Sustainable Minerals Institute, The University of Queensland, St Lucia, 4072, QLD, Australia
| | | | | | - Matsain Mohd Buang
- Forest Research Centre, Sabah Forestry Department, Sandakan, Sabah, Malaysia
| | - Zarina Amin
- Biotechnology Research Institute, Universiti Malaysia Sabah, Kota Kinabalu, Sabah, Malaysia
| | - Guillaume Echevarria
- Université de Lorraine, INRAE, Laboratoire Sols et Environnement, 54000, Nancy, France.,Centre for Mined Land Rehabilitation, Sustainable Minerals Institute, The University of Queensland, St Lucia, 4072, QLD, Australia
| | - Jean Louis Morel
- Université de Lorraine, INRAE, Laboratoire Sols et Environnement, 54000, Nancy, France
| | - Emile Benizri
- Université de Lorraine, INRAE, Laboratoire Sols et Environnement, 54000, Nancy, France
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221
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Application of Floating Aquatic Plants in Phytoremediation of Heavy Metals Polluted Water: A Review. SUSTAINABILITY 2020. [DOI: 10.3390/su12051927] [Citation(s) in RCA: 116] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Heavy-metal (HM) pollution is considered a leading source of environmental contamination. Heavy-metal pollution in ground water poses a serious threat to human health and the aquatic ecosystem. Conventional treatment technologies to remove the pollutants from wastewater are usually costly, time-consuming, environmentally destructive, and mostly inefficient. Phytoremediation is a cost-effective green emerging technology with long-lasting applicability. The selection of plant species is the most significant aspect for successful phytoremediation. Aquatic plants hold steep efficiency for the removal of organic and inorganic pollutants. Water hyacinth (Eichhornia crassipes), water lettuce (Pistia stratiotes) and Duck weed (Lemna minor) along with some other aquatic plants are prominent metal accumulator plants for the remediation of heavy-metal polluted water. The phytoremediation potential of the aquatic plant can be further enhanced by the application of innovative approaches in phytoremediation. A summarizing review regarding the use of aquatic plants in phytoremediation is gathered in order to present the broad applicability of phytoremediation.
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222
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Udiba UU, Antai EE, Akpan ER. Assessment of Lead (Pb) Remediation Potential of Senna obtusifolia in Dareta Village, Zamfara, Nigeria. J Health Pollut 2020; 10:200301. [PMID: 32175172 PMCID: PMC7058136 DOI: 10.5696/2156-9614-10.25.200301] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Accepted: 10/24/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND Environmental contamination by lead (Pb) and other toxic metals is of significant environmental and human health concern. Heavy metals are not readily eliminated by degradation, and thus remediation of contaminated media (soil, sediment and water/sludge) requires the outright removal or cleanup of these metals. Evaluation of the performance and cost efficiency of various remediation methods has led to the development of bioremediation as an inexpensive, innovative and environmentally friendly cleanup strategy. OBJECTIVES The present study was designed to assess the Pb remediation potential of wild Senna obtusifolia (Sicklepod), in Dareta Village, Zamfara, Nigeria. METHODS Soil and Senna obtusifolia samples were collected from established plots and Pb content was determined using a Shimadzu atomic absorption spectrophotometer (model AA-6800, Japan) after wet digestion. RESULTS The mean concentrations of Pb (mg/kg) in soil, roots, stems and leaves, respectively, were 130.68±5.2, 61.33±17.86, 66.64±18.10 and 173.39±13.73 for plot 1, 287.84±6.5, 69.42±11.62, 123.4±3.67 and 294.28±4.38 for plot 2, 315.73±4.13, 68.42±10.22, 86.89±6.08 and 290.61±7.47 for plot 3, 396.86±5.48, 91.64±2.87, 150.58±2.21 and 282.53±5.69 for plot 4 and 264.23±8.02, 72.71±2.18, 124.60±2.27 and 282.40±3.79 for plot 5. Average values for the translocation factor, bioaccumulation factor and bioconcentration factor were 3.65±0.66, 1.01±0.23 and 0.29±0.10, respectively. DISCUSSION Soil Pb levels in the present study were found to be within the United States Environmental Protection Agency (USEPA) standards and the Dutch Intervention Values for Pb in soil. Lead content of Senna obtusifolia leaves was found to be higher than the Pb content of the stem and root, indicating relatively low restriction and the efficiency of internal transport of the toxic metal from the roots towards the aerial parts. High translocation and bioaccumulation factors indicate that the plant has vital characteristics for phytoextraction of Pb. The mean Pb concentration of Senna obtusifolia leaves was found to be far above Codex general standards and the European Union (EU) maximum levels for Pb in leafy vegetables. CONCLUSIONS The study concludes that wild Senna obtusifolia has significant characteristics for phytoextraction of Pb and that consumption of Senna obtusifolia leaves from the study area would pose a serious risk of Pb intoxication. COMPETING INTERESTS The authors declare no competing financial interests.
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Affiliation(s)
- Udiba Ugumanim Udiba
- Department of Zoology and Environmental Biology, University of Calabar, Calabar, Nigeria
| | - Ekpo Eyo Antai
- Institute of Oceanography, University of Calabar, Calabar, Nigeria
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223
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Rai PK, Kim KH, Lee SS, Lee JH. Molecular mechanisms in phytoremediation of environmental contaminants and prospects of engineered transgenic plants/microbes. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 705:135858. [PMID: 31846820 DOI: 10.1016/j.scitotenv.2019.135858] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 11/21/2019] [Accepted: 11/28/2019] [Indexed: 05/06/2023]
Abstract
Concerns about emerging environmental contaminants have been growing along with industrialization and urbanization around the globe. Among various options for remediating these contaminants, phytotechnology is suggested as a feasible option to maintain the environmental sustainability. The recent advances in phytoremediation, genetic/molecular/omics/metabolic engineering, and nanotechnology are opening new paths for efficient treatment of emerging organic/inorganic contaminants. In this respect, elucidation of molecular mechanisms and genetic engineering of hyperaccumulator plants is expected to enhance remediation of environmental contaminants. This review was organized to offer valuable insights into the molecular mechanisms of phytoremediation and the prospects of transgenic hyperaccumulators with enhanced stress tolerance to diverse contaminants such as heavy metals and metalloids, xenobiotics, explosives, poly aromatic hydrocarbons (PAHs), petroleum hydrocarbons, pesticides, and nanoparticles. The roles of genoremediation and nanoparticles in augmenting the phytoremediation technology are also described in an interrelated framework with biotechnological prospects (e.g., plant molecular nano-farming). Finally, political debate on the preferential use of crops versus non-crop hyperaccumulators in genoremediation, limitations of transgenics in phytotechnologies, and their public acceptance issues are discussed in the policy framework.
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Affiliation(s)
- Prabhat Kumar Rai
- Department of Environmental Science, Mizoram University, Aizawl 796004, India
| | - Ki-Hyun Kim
- Department of Civil and Environmental Engineering, Hanyang University, Seoul 04763, Republic of Korea.
| | - Sang Soo Lee
- Department of Environmental Engineering, Yonsei University, Wonju 26494, Republic of Korea.
| | - Jin-Hong Lee
- Department of Environmental Engineering, Chungnam National University, Daejeon 34148, Republic of Korea
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224
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van der Ent A, de Jonge MD, Spiers KM, Brueckner D, Montargès-Pelletier E, Echevarria G, Wan XM, Lei M, Mak R, Lovett JH, Harris HH. Confocal Volumetric μXRF and Fluorescence Computed μ-Tomography Reveals Arsenic Three-Dimensional Distribution within Intact Pteris vittata Fronds. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:745-757. [PMID: 31891245 DOI: 10.1021/acs.est.9b03878] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The fern Pteris vittata has been the subject of numerous studies because of its extreme arsenic hyperaccumulation characteristics. However, information on the arsenic chemical speciation and distribution across cell types within intact frozen-hydrated Pteris vittata fronds is necessary to better understand the arsenic biotransformation pathways in this unusual fern. While 2D X-ray absorption spectroscopy imaging studies show that different chemical forms of arsenic, As(III) and As(V), occur across the plant organs, depth-resolved information on arsenic distribution and chemical speciation in different cell types within tissues of Pteris vittata have not been reported. By using a combination of planar and confocal μ-X-ray fluorescence imaging and fluorescence computed μ-tomography, we reveal, in this study, the localization of arsenic in the endodermis and pericycle surrounding the vascular bundles in the rachis and the pinnules of the fern. Arsenic is also accumulated in the vascular bundles connecting into each sporangium, and in some mature sori. The use of 2D X-ray absorption near edge structure imaging allows for deciphering arsenic speciation across the tissues, revealing arsenate in the vascular bundles and arsenite in the endodermis and pericycle. This study demonstrates how different advanced synchrotron X-ray microscopy techniques can be complementary in revealing, at tissue and cellular levels, elemental distribution and chemical speciation in hyperaccumulator plants.
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Affiliation(s)
- Antony van der Ent
- Centre for Mined Land Rehabilitation, Sustainable Minerals Institute , The University of Queensland , St. Lucia , QLD 4072 , Australia
- Laboratoire Sols et Environnement, UMR 1120 , Université de Lorraine , Nancy 54000 , France
| | - Martin D de Jonge
- Australian Synchrotron , ANSTO , 800 Blackburn Road , Clayton , Victoria 3168 , Australia
| | - Kathryn M Spiers
- Photon Science , Deutsches Elektronen-Synchrotron DESY , Hamburg , 22607 , Germany
| | - Dennis Brueckner
- Photon Science , Deutsches Elektronen-Synchrotron DESY , Hamburg , 22607 , Germany
- Department of Physics , University of Hamburg , Hamburg , 20146 , Germany
- Faculty of Chemistry and Biochemistry , Ruhr-University Bochum , Bochum , 44801 , Germany
| | | | - Guillaume Echevarria
- Laboratoire Sols et Environnement, UMR 1120 , Université de Lorraine , Nancy 54000 , France
| | - Xiao-Ming Wan
- Institute of Geographic Sciences and Natural Resources , Research, Chinese Academy of Sciences , Beijing 100101 , China
- College of Resources and Environment , University of Chinese Academy of Sciences , Bejing 100049 , P. R. China
| | - Mei Lei
- Institute of Geographic Sciences and Natural Resources , Research, Chinese Academy of Sciences , Beijing 100101 , China
- College of Resources and Environment , University of Chinese Academy of Sciences , Bejing 100049 , P. R. China
| | - Rachel Mak
- School of Chemistry , University of Sydney , Sydney , NSW 2006 , Australia
| | - James H Lovett
- Department of Chemistry , The University of Adelaide , Adelaide , SA 5005 , Australia
| | - Hugh H Harris
- Department of Chemistry , The University of Adelaide , Adelaide , SA 5005 , Australia
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225
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Do C, Abubakari F, Remigio AC, Brown GK, Casey LW, Burtet-Sarramegna V, Gei V, Erskine PD, van der Ent A. A preliminary survey of nickel, manganese and zinc (hyper)accumulation in the flora of Papua New Guinea from herbarium X-ray fluorescence scanning. CHEMOECOLOGY 2020. [DOI: 10.1007/s00049-019-00293-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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226
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Corso M, García de la Torre VS. Biomolecular approaches to understanding metal tolerance and hyperaccumulation in plants. Metallomics 2020; 12:840-859. [DOI: 10.1039/d0mt00043d] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Trace metal elements are essential for plant growth but become toxic at high concentrations, while some non-essential elements, such as Cd and As, show toxicity even in traces.
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Affiliation(s)
- Massimiliano Corso
- Institut Jean-Pierre Bourgin
- Université Paris-Saclay
- INRAE
- AgroParisTech
- 78000 Versailles
| | - Vanesa S. García de la Torre
- Molecular Genetics and Physiology of Plants
- Faculty of Biology and Biotechnology
- Ruhr University Bochum
- 44801 Bochum
- Germany
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227
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Hu B, Deng F, Chen G, Chen X, Gao W, Long L, Xia J, Chen ZH. Evolution of Abscisic Acid Signaling for Stress Responses to Toxic Metals and Metalloids. FRONTIERS IN PLANT SCIENCE 2020; 11:909. [PMID: 32765540 PMCID: PMC7379394 DOI: 10.3389/fpls.2020.00909] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 06/03/2020] [Indexed: 05/02/2023]
Abstract
Toxic heavy metals and metalloids in agricultural ecosystems are crucial factors that limit global crop productivity and food safety. Industrial toxic heavy metals and metalloids such as cadmium, lead, and arsenic have contaminated large areas of arable land in the world and their accumulation in the edible parts of crops is causing serious health risks to humans and animals. Plants have co-evolved with various concentrations of these toxic metals and metalloids in soil and water. Some green plant species have significant innovations in key genes for the adaptation of abiotic stress tolerance pathways that are able to tolerate heavy metals and metalloids. Increasing evidence has demonstrated that phytohormone abscisic acid (ABA) plays a vital role in the alleviation of heavy metal and metalloid stresses in plants. Here, we trace the evolutionary origins of the key gene families connecting ABA signaling with tolerance to heavy metals and metalloids in green plants. We also summarize the molecular and physiological aspects of ABA in the uptake, root-to-shoot translocation, chelation, sequestration, reutilization, and accumulation of key heavy metals and metalloids in plants. The molecular evolution and interaction between the ABA signaling pathway and mechanisms for heavy metal and metalloid tolerance are highlighted in this review. Therefore, we propose that it is promising to manipulate ABA signaling in plant tissues to reduce the uptake and accumulation of toxic heavy metals and metalloids in crops through the application of ABA-producing bacteria or ABA analogues. This may lead to improvements in tolerance of major crops to heavy metals and metalloids.
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Affiliation(s)
- Beibei Hu
- Engineering Research Center of Ecology and Agricultural Use of Wetland, Ministry of Education/Hubei Key Laboratory of Waterlogging Disaster and Agricultural Use of Wetland, Yangtze University, Jingzhou, China
| | - Fenglin Deng
- Engineering Research Center of Ecology and Agricultural Use of Wetland, Ministry of Education/Hubei Key Laboratory of Waterlogging Disaster and Agricultural Use of Wetland, Yangtze University, Jingzhou, China
- *Correspondence: Fenglin Deng, ; Zhong-Hua Chen,
| | - Guang Chen
- Engineering Research Center of Ecology and Agricultural Use of Wetland, Ministry of Education/Hubei Key Laboratory of Waterlogging Disaster and Agricultural Use of Wetland, Yangtze University, Jingzhou, China
| | - Xuan Chen
- Engineering Research Center of Ecology and Agricultural Use of Wetland, Ministry of Education/Hubei Key Laboratory of Waterlogging Disaster and Agricultural Use of Wetland, Yangtze University, Jingzhou, China
| | - Wei Gao
- State Key Laboratory of Crop Stress Adaptation and Improvement, Henan University, Kaifeng, China
| | - Lu Long
- State Key Laboratory of Crop Stress Adaptation and Improvement, Henan University, Kaifeng, China
| | - Jixing Xia
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Guangxi University, Nanning, China
| | - Zhong-Hua Chen
- School of Science, Western Sydney University, Penrith, NSW, Australia
- Hawkesbury Institute for the Environment, Western Sydney University, Penrith, NSW, Australia
- *Correspondence: Fenglin Deng, ; Zhong-Hua Chen,
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228
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Busby RR, Douglas TA, LeMonte JJ, Ringelberg DB, Indest KJ. Metal accumulation capacity in indigenous Alaska vegetation growing on military training lands. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2020; 22:259-266. [PMID: 31478391 DOI: 10.1080/15226514.2019.1658708] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Permafrost thawing could increase soil contaminant mobilization in the environment. Our objective was to quantify metal accumulation capacities for plant species and functional groups common to Alaskan military training ranges where elevated soil metal concentrations were likely to occur. Plant species across multiple military training range sites were collected. Metal content in shoots and roots was compared to soil metal concentrations to calculate bioconcentration and translocation factors. On average, grasses accumulated greater concentrations of Cr, Cu, Ni, Pb, Sb, and Zn relative to forbs or shrubs, and bioconcentrated greater concentrations of Ni and Pb. Shrubs bioconcentrated greater concentrations of Sb. Translocation to shoots was greatest among the forbs. Three native plants were identified as candidate species for use in metal phytostabilization applications. Elymus macrourus, a grass, bioconcentrated substantial concentrations of Cu, Pb, and Zn in roots with low translocation to shoots. Elaeagnus commutata, a shrub, bioconcentrated the greatest amounts of Sb, Ni, and Cr, with a low translocation factor. Solidago decumbens bioconcentrated the greatest amount of Sb among the forbs and translocated the least amount of metals. A combination of forb, shrub, and grass will likely enhance phytostabilization of heavy metals in interior Alaska soils through increased functional group diversity.
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Affiliation(s)
- Ryan R Busby
- US Army Construction Engineering Research Laboratory, Champaign, IL, USA
| | - Thomas A Douglas
- US Army Cold Regions Research and Engineering Laboratory, Fort Wainwright, AK, USA
| | | | - David B Ringelberg
- US Army Cold Regions Research and Engineering Laboratory, Hanover, NH, USA
| | - Karl J Indest
- US Army Environmental Laboratory, Vicksburg, MS, USA
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229
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Pourret O, Bollinger JC, van Hullebusch ED. On the difficulties of being rigorous in environmental geochemistry studies: some recommendations for designing an impactful paper. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:1267-1275. [PMID: 31745782 DOI: 10.1007/s11356-019-06835-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 10/21/2019] [Indexed: 04/16/2023]
Abstract
There have been numerous environmental geochemistry studies using chemical, geological, ecological, and toxicological methods but each of these fields requires more subject specialist rigour than has generally been applied so far. Field-specific terminology has been misused and the resulting interpretations rendered inaccurate. In this paper, we propose a series of suggestions, based on our experience as teachers, researchers, reviewers, and editorial board members, to help authors to avoid pitfalls. Many scientific inaccuracies continue to be unchecked and are repeatedly republished by the scientific community. These recommendations should help our colleagues and editorial board members, as well as reviewers, to avoid the numerous inaccuracies and misconceptions currently in circulation and establish a trend towards greater rigour in scientific writing.
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Affiliation(s)
- Olivier Pourret
- UniLaSalle, AGHYLE, 19 rue Pierre Waguet, 60026, Beauvais cedex, France.
| | - Jean-Claude Bollinger
- Université de Limoges, PEREINE, Faculté des Sciences et Techniques, 123 avenue Albert-Thomas, 87060, Limoges, France
| | - Eric D van Hullebusch
- IHE Delft, Institute for Water Education, Westvest 7, 2611, AX, Delft, The Netherlands
- Université de Paris, Institut de physique du globe de Paris, CNRS, F-75005, Paris, France
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230
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Nishida S, Tanikawa R, Ishida S, Yoshida J, Mizuno T, Nakanishi H, Furuta N. Elevated Expression of Vacuolar Nickel Transporter Gene IREG2 Is Associated With Reduced Root-to-Shoot Nickel Translocation in Noccaea japonica. FRONTIERS IN PLANT SCIENCE 2020; 11:610. [PMID: 32582232 PMCID: PMC7283525 DOI: 10.3389/fpls.2020.00610] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 04/21/2020] [Indexed: 05/04/2023]
Abstract
A number of metal hyperaccumulator plants, including nickel (Ni) hyperaccumulators, have been identified in the genus Noccaea. The ability to accumulate Ni in shoots varies widely among species and ecotypes in this genus; however, little is known about the molecular mechanisms underlying this intra- and inter-specific variation. Here, in hydroponic culture, we compared Ni accumulation patterns between Noccaea japonica, which originated in Ni-enriched serpentine soils in Mt. Yubari (Hokkaido, Japan), and Noccaea caerulescens ecotype Ganges, which originated in zinc/lead-mine soils in Southern France. Both Noccaea species showed extremely high Ni tolerance compared with that of the non-accumulator Arabidopsis thaliana. But, following treatment with 200 μM Ni, N. caerulescens showed leaf chlorosis, whereas N. japonica did not show any stress symptoms. Shoot Ni concentration was higher in N. caerulescens than in N. japonica; this difference was due to higher efficiency of root-to-shoot Ni translocation in N. caerulescens than N. japonica. It is known that the vacuole Ni transporter IREG2 suppresses Ni translocation from roots to shoots by sequestering Ni in the root vacuoles. The expression level of the IREG2 gene in the roots of N. japonica was 10-fold that in the roots of N. caerulescens. Moreover, the copy number of IREG2 per genome was higher in N. japonica than in N. caerulescens, suggesting that IREG2 expression is elevated by gene multiplication in N. japonica. The heterologous expression of IREG2 of N. japonica and N. caerulescens in yeast and A. thaliana confirmed that both IREG2 genes encode functional vacuole Ni transporters. Taking these results together, we hypothesize that the elevation of IREG2 expression by gene multiplication causes the lower root-to-shoot Ni translocation in N. japonica.
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Affiliation(s)
- Sho Nishida
- Laboratory of Plant Nutrition, Faculty of Agriculture, Saga University, Saga, Japan
- *Correspondence: Sho Nishida,
| | - Ryoji Tanikawa
- Laboratory of Environmental Chemistry, Faculty of Science and Engineering, Chuo University, Tokyo, Japan
| | - Shota Ishida
- Laboratory of Environmental Chemistry, Faculty of Science and Engineering, Chuo University, Tokyo, Japan
| | - Junko Yoshida
- Laboratory of Soil Science and Plant Nutrition, Graduate School of Bioresources, Mie University, Tsu, Japan
| | - Takafumi Mizuno
- Laboratory of Soil Science and Plant Nutrition, Graduate School of Bioresources, Mie University, Tsu, Japan
| | - Hiromi Nakanishi
- Laboratory of Plant Biotechnology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Naoki Furuta
- Laboratory of Environmental Chemistry, Faculty of Science and Engineering, Chuo University, Tokyo, Japan
- Naoki Furuta,
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231
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Rue M, Paul ALD, Echevarria G, van der Ent A, Simonnot MO, Morel JL. Uptake, translocation and accumulation of nickel and cobalt in Berkheya coddii, a ‘metal crop’ from South Africa. Metallomics 2020; 12:1278-1289. [DOI: 10.1039/d0mt00099j] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hyperaccumulator plants have the ability to efficiently concentrate metallic elements, e.g. nickel, from low-grade sources into their living biomass.
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Affiliation(s)
- Marie Rue
- Université de Lorraine
- INRAE
- LSE
- F-54000 Nancy
- France
| | - Adrian L. D. Paul
- Centre for Mined Land Rehabilitation
- Sustainable Minerals Institute
- The University of Queensland
- Australia
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232
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Dou X, Dai H, Twardowska I, Wei S. Hyperaccumulation of Cd by Rorippa globosa (Turcz.) Thell. from soil enriched with different Cd compounds, and impact of soil amendment with glutathione (GSH) on the hyperaccumulation efficiency. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 255:113270. [PMID: 31563768 DOI: 10.1016/j.envpol.2019.113270] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 09/05/2019] [Accepted: 09/17/2019] [Indexed: 06/10/2023]
Abstract
Rorippa globosa (Turcz.) Thell. is known as Cd hyperaccumulator, however neither hyperaccumulation nature, nor affecting factors like the effect of Cd compounds entering soil from different sources, or of specific soil amendments, are not yet satisfactorily clarified. In the pot culture experiment, Cd accumulation by R. globosa from soils spiked with 3 and 9 mg Cd kg-1 in the form of Cd(NO3)2, CdCl2, CdBr2, CdI2, CdSO4, CdF2, Cd(OH)2, CdCO3, Cd3(PO4)2, CdS and effect of soil amendment with glutathione (GSH) were investigated. Accumulation capacity of R. globosa for Cd appeared to reflect its extractability in soils and was about two-fold bigger for high soluble compounds than for low-soluble ones. At that, the differences between the accumulation of Cd originating from high soluble compound group did not exceed 20%, while the differences within the low soluble compound group were insignificant (p < 0.05). The analysis of Cd uptake, uptake factor (UF), enrichment factor (EF) and translocation factor (TF) patterns revealed that Cd hyperaccumulating properties of R. globosa are based on the high water/nutrients demand and strong tolerance to Cd, although weak protection against Cd uptake by root system was also observed. Amendment with GSH enhanced Cd availability to plant and its uptake from soil, but exerted no effect on Cd translocation in plants. In the light of the results, the use of R. globosa for phytoremediation of moderately polluted agricultural lands as forecrop or aftercrop, and the GSH-assisted phytoremediation of highly polluted post-industrial sites seem to be viable options.
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Affiliation(s)
- Xuekai Dou
- Key Laboratory of Pollution Ecology and Environment Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; University of Chinese Academy of Sciences, Beijing 100039, China
| | - Huiping Dai
- College of Biological Science & Engineering, Shaanxi Province Key Laboratory of Bio-resources, Shaanxi University of Technology, Hanzhong 723001, China
| | - Irena Twardowska
- Institute of Environmental Engineering of the Polish Academy of Sciences, 41-819 Zabrze, Poland
| | - Shuhe Wei
- Key Laboratory of Pollution Ecology and Environment Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.
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233
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Pérez-Palacios P, Funes-Pinter I, Agostini E, Talano MA, Ibáñez SG, Humphry M, Edwards K, Rodríguez-Llorente ID, Caviedes MA, Pajuelo E. Targeting Acr3 from Ensifer medicae to the plasma membrane or to the tonoplast of tobacco hairy roots allows arsenic extrusion or improved accumulation. Effect of acr3 expression on the root transcriptome. Metallomics 2019; 11:1864-1886. [PMID: 31588944 DOI: 10.1039/c9mt00191c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Transgenic tobacco hairy roots expressing the bacterial arsenite efflux pump Acr3 from Ensifer medicae were generated. The gene product was targeted either to the plasma membrane (ACR3 lines) or to the tonoplast by fusing the ACR3 protein to the tonoplast integral protein TIP1.1 (TIP-ACR3 lines). Roots expressing Acr3 at the tonoplast showed greater biomass than those expressing Acr3 at the plasma membrane. Furthermore, higher contents of malondialdehyde (MDA) and RNA degradation in ACR3 lines were indicative of higher oxidative stress. The determination of ROS-scavenging enzymes depicted the transient role of peroxidases in ROS detoxification, followed by the action of superoxide dismutase during both short- and medium-term exposure periods. Regarding As accumulation, ACR3 lines accumulated up to 20-30% less As, whereas TIP-ACR3 achieved a 2-fold increase in As accumulation in comparison to control hairy roots. Strategies that presumably induce As uptake, such as phosphate deprivation or dehydration followed by rehydration in the presence of As, fostered As accumulation up to 10 800 μg g-1. Finally, the effects of the heterologous expression of acr3 on the root transcriptome were assessed. Expression at the plasma membrane induced drastic changes in gene expression, with outstanding overexpression of genes related to electron transport, ATP synthesis and ATPases, suggesting that As efflux is the main detoxification mechanism in these lines. In addition, genes encoding heat shock proteins and those related to proline synthesis and drought tolerance were activated. On the other hand, TIP-ACR3 lines showed a similar gene expression profile to that of control roots, with overexpression of the glutathione and phytochelatin synthesis pathways, together with secondary metabolism pathways as the most important resistance mechanisms in TIP-ACR3, for which As allocation into the vacuole allowed better growth and stress management. Our results suggest that modulation of As accumulation can be achieved by subcellular targeting of Acr3: expression at the tonoplast enhances As accumulation in roots, whereas expression at the plasma membrane could promote As efflux. Thus, both approaches open the possibilities for developing safer crops when grown on As-polluted paddy soils, but expression at the tonoplast leads to better growth and less stressed roots, since the high energy cost of As efflux likely compromises growth in ACR3 lines.
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Affiliation(s)
- Patricia Pérez-Palacios
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, c/Profesor García González, 2, 41012-Sevilla, Spain. and Departamento de Biología Molecular, FCEFQyN, Universidad Nacional de Río Cuarto, Ruta Nacional 36 - Km. 601 - Río Cuarto, Córdoba, Argentina and Plant Biotechnology Division, British American Tobacco, Cambridge, CB4 0WA, UK
| | - Iván Funes-Pinter
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, c/Profesor García González, 2, 41012-Sevilla, Spain. and Facultad de Ciencias Agrarias, Universidad Nacional de Cuyo, Mendoza (CP 5507), Atte Brown 500, Chacras de Coria, Argentina
| | - Elizabeth Agostini
- Departamento de Biología Molecular, FCEFQyN, Universidad Nacional de Río Cuarto, Ruta Nacional 36 - Km. 601 - Río Cuarto, Córdoba, Argentina
| | - Melina A Talano
- Departamento de Biología Molecular, FCEFQyN, Universidad Nacional de Río Cuarto, Ruta Nacional 36 - Km. 601 - Río Cuarto, Córdoba, Argentina
| | - Sabrina G Ibáñez
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
| | - Matt Humphry
- British American Tobacco (Investments) Ltd, Cambridge, CB4 0WA, UK
| | - Kieron Edwards
- Plant Biotechnology Division, British American Tobacco, Cambridge, CB4 0WA, UK
| | - Ignacio D Rodríguez-Llorente
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, c/Profesor García González, 2, 41012-Sevilla, Spain.
| | - Miguel A Caviedes
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, c/Profesor García González, 2, 41012-Sevilla, Spain.
| | - Eloísa Pajuelo
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, c/Profesor García González, 2, 41012-Sevilla, Spain.
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234
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McCartha GL, Taylor CM, van der Ent A, Echevarria G, Navarrete Gutiérrez DM, Pollard AJ. Phylogenetic and geographic distribution of nickel hyperaccumulation in neotropical Psychotria. AMERICAN JOURNAL OF BOTANY 2019; 106:1377-1385. [PMID: 31553490 DOI: 10.1002/ajb2.1362] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Accepted: 07/30/2019] [Indexed: 06/10/2023]
Abstract
PREMISE Hyperaccumulation of heavy metals in plants has never been documented from Central America or Mexico. Psychotria grandis, P. costivenia, and P. glomerata (Rubiaceae) have been reported to hyperaccumulate nickel in the Greater Antilles, but they also occur widely across the neotropics. The goals of this research were to investigate the geographic distribution of hyperaccumulation in these species and explore the phylogenetic distribution of hyperaccumulation in this clade by testing related species. METHODS Portable x-ray fluorescence (XRF) spectroscopy was used to analyze 565 specimens representing eight species of Psychotria from the Missouri Botanical Garden herbarium. RESULTS Nickel hyperaccumulation was found in specimens of Psychotria costivenia ranging from Mexico to Costa Rica and in specimens of P. grandis from Guatemala to Ecuador and Venezuela. Among related species, nickel hyperaccumulation is reported for the first time in P. lorenciana and P. papantlensis, but no evidence of hyperaccumulation was found in P. clivorum, P. flava, or P. pleuropoda. Previous reports of hyperaccumulation in P. glomerata appear to be erroneous, resulting from taxonomic synonymy and specimen misidentification. CONCLUSIONS Hyperaccumulation of nickel by Psychotria is now known to occur widely from southern Mexico through Central America to northwestern South America, including some areas not known to have ultramafic soils. Novel aspects of this research include the successful prediction of new hyperaccumulator species based on molecular phylogeny, use of XRF technology to nondestructively obtain elemental data from herbarium specimens, and documentation of previously unknown areas of ultramafic or nickel-rich soil based on such data.
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Affiliation(s)
- Grace L McCartha
- Department of Biology, Furman University, 3300 Poinsett Highway, Greenville, SC, 29613, USA
| | | | - Antony van der Ent
- Centre for Mined Land Rehabilitation, Sustainable Minerals Institute, The University of Queensland, Brisbane, Queensland, 4072, Australia
- Laboratoire Sols et Environnement, INRA, Université de Lorraine, 54000, Nancy, France
| | - Guillaume Echevarria
- Centre for Mined Land Rehabilitation, Sustainable Minerals Institute, The University of Queensland, Brisbane, Queensland, 4072, Australia
- Laboratoire Sols et Environnement, INRA, Université de Lorraine, 54000, Nancy, France
| | - Dulce M Navarrete Gutiérrez
- Laboratoire Sols et Environnement, INRA, Université de Lorraine, 54000, Nancy, France
- Universidad Autónoma de Chapingo, Texcoco, DF, México
| | - A Joseph Pollard
- Department of Biology, Furman University, 3300 Poinsett Highway, Greenville, SC, 29613, USA
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235
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Clemens S. Metal ligands in micronutrient acquisition and homeostasis. PLANT, CELL & ENVIRONMENT 2019; 42:2902-2912. [PMID: 31350913 DOI: 10.1111/pce.13627] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 07/22/2019] [Accepted: 07/23/2019] [Indexed: 05/09/2023]
Abstract
Acquisition and homeostasis of micronutrients such as iron (Fe) and zinc (Zn) pose specific challenges. Poor solubility and high reactivity require controlled synthesis and supply of ligands to complex these metals extracellularly and intracellularly. Cytosolic labile pools represent only a minute fraction of the total cellular content. Several low-molecular-weight ligands are known in plants, including sulfur ligands (cysteine and peptides), nitrogen/oxygen ligands (S-adenosyl-l-methionine-derived molecules and histidine), and oxygen ligands (phenolics and organic acids). Some ligands are secreted into the extracellular space and influence the phytoavailability of metal ions. A second principal function is the intracellular buffering of micronutrients as well as the facilitation of long-distance transport in xylem and phloem. Furthermore, low-molecular-weight ligands are involved in the storage of metals, predominantly in vacuoles. A detailed molecular understanding is hampered by technical limitations, in particular the difficulty to detect and quantify cellular metal-ligand complexes. More, but still too little, is known about ligand synthesis and the transport across membranes, either with or without a complexed metal. Metal ligands have an immediate impact on human well-being. Engineering metal ligand synthesis and distribution in crops has tremendous potential to improve the nutritional quality of food and to tackle major human health risks.
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Affiliation(s)
- Stephan Clemens
- Department of Plant Physiology and Bayreuth Center of Ecology and Environmental Research, University of Bayreuth, Universitätsstrasse 30, 95447, Bayreuth, Germany
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236
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Šinzar-Sekulić J, Stamenković UM, Tomović G, Tumi AF, Andrejić G, Mihailović N, Lazarević MR. Assessment of trace element accumulation potential of Noccaea kovatsii from ultramafics of Bosnia and Herzegovina and Serbia. ENVIRONMENTAL MONITORING AND ASSESSMENT 2019; 191:540. [PMID: 31378832 DOI: 10.1007/s10661-019-7711-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Accepted: 07/24/2019] [Indexed: 06/10/2023]
Abstract
In this work, we present the results of the investigation of trace elements (Fe, Mg, Ni, Zn, Cu, Cr, Co, Cd, Pb) accumulation potential of Noccaea kovatsii (Heuff.) F. K. Mey., from the Balkan Peninsula. The study included eight populations from ultramafic soils, six from Bosnia and Herzegovina, and two from Serbia. Principal component analysis (PCA) was used to reveal relationships of elements in soil, and Pearson's correlation coefficients for analysing associations of available quantities of elements in soil and those in roots and shoots of N. kovatsii. Uptake and translocation efficiency was assessed by using bioconcentration (BCF) and translocation factors (TF). All the analysed populations of N. kovatsii emerged as strong Ni accumulators, with the highest shoot concentrations of 12,505 mg kg-1. Even thought contents of Zn in plant tissues of N. kovatsii were under the hyperaccumulation level (602 mg kg-1 and 1120 mg kg-1 respectively), BCF was up to 667, indicating that certain surveyed populations have strong accumulative potential for this element.
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Affiliation(s)
- Jasmina Šinzar-Sekulić
- Department of Plant Ecology and Phytogeography, Institute of Botany and Botanical Garden "Jevremovac," Faculty of Biology, University of Belgrade, Studentski trg 16, Belgrade, 11000, Serbia.
| | - Una Matko Stamenković
- Department of Plant Ecology and Phytogeography, Institute of Botany and Botanical Garden "Jevremovac," Faculty of Biology, University of Belgrade, Studentski trg 16, Belgrade, 11000, Serbia
| | - Gordana Tomović
- Department of Plant Ecology and Phytogeography, Institute of Botany and Botanical Garden "Jevremovac," Faculty of Biology, University of Belgrade, Studentski trg 16, Belgrade, 11000, Serbia
| | - Ahmed F Tumi
- Department of Plant Ecology and Phytogeography, Institute of Botany and Botanical Garden "Jevremovac," Faculty of Biology, University of Belgrade, Studentski trg 16, Belgrade, 11000, Serbia
| | - Gordana Andrejić
- Institute for Application of Nuclear Energy, University of Belgrade, Banatska 31b, Zemun, 11080, Serbia
| | - Nevena Mihailović
- Institute for Application of Nuclear Energy, University of Belgrade, Banatska 31b, Zemun, 11080, Serbia
| | - Maja R Lazarević
- Department of Plant Ecology and Phytogeography, Institute of Botany and Botanical Garden "Jevremovac," Faculty of Biology, University of Belgrade, Studentski trg 16, Belgrade, 11000, Serbia
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237
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Xiang J, Ming J, Yin H, Zhu Y, Li Y, Long L, Ye Z, Wang H, Wang X, Zhang F, Yang Y, Yang C. Anatomy and Histochemistry of the Roots and Shoots in the Aquatic Selenium Hyperaccumulator Cardamine Hupingshanensis (Brassicaceae). Open Life Sci 2019; 14:318-326. [PMID: 33817165 PMCID: PMC7874794 DOI: 10.1515/biol-2019-0035] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2018] [Accepted: 02/25/2019] [Indexed: 11/15/2022] Open
Abstract
The perennial selenium (Se) hyperaccumulator Cardamine hupingshanensis (Brassicaceae) thrives in aquatic and subaquatic Se-rich environments along the Wuling Mountains, China. Using bright-field and epifluorescence microscopy, the present study determined the anatomical structures and histochemical features that allow this species to survive in Se-rich aquatic environments. The roots of C. hupingshanensis have an endodermis with Casparian walls, suberin lamellae, and lignified secondary cell walls; the cortex and hypodermal walls have phi (Φ) thickenings; and the mature taproots have a secondary structure with a periderm. The stems possess a lignified sclerenchymal ring and an endodermis, and the pith and cortex walls have polysaccharide-rich collenchyma. Air spaces are present in the intercellular spaces and aerenchyma in the cortex and pith of the roots and shoots. The dense fine roots with lignified Φ thickenings and polysaccharide-rich collenchyma in the shoots may allow C. hupingshanensis to hyperaccumulate Se. Overall, our study elucidated the anatomical features that permit C. hupingshanensis to thrive in Se-rich aquatic environments.
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Affiliation(s)
- Jiqian Xiang
- Hubei Selenium Industry Technology Research Institute, Enshi 454000 China
| | - Jiajia Ming
- Hubei Selenium Industry Technology Research Institute, Enshi 454000 China
| | - Hongqing Yin
- Hubei Selenium Industry Technology Research Institute, Enshi 454000 China
| | - Yunfen Zhu
- Hubei Selenium Industry Technology Research Institute, Enshi 454000 China
| | - Yajie Li
- Hubei Selenium Industry Technology Research Institute, Enshi 454000 China
| | - Lan Long
- Hubei Selenium Industry Technology Research Institute, Enshi 454000 China
| | - Ziyun Ye
- Hubei Selenium Industry Technology Research Institute, Enshi 454000 China
| | - Haiying Wang
- Hubei Selenium Industry Technology Research Institute, Enshi 454000 China
| | - Xiaoe Wang
- Engineering Research Center of Ecology and Agriculture Use of Wetland, Ministry of Education, Yangtze University, Jingzhou,434025 China
| | - Fan Zhang
- Engineering Research Center of Ecology and Agriculture Use of Wetland, Ministry of Education, Yangtze University, Jingzhou,434025 China
| | - Yongkang Yang
- Hubei Selenium Industry Technology Research Institute, Enshi 454000 China
| | - Chaodong Yang
- Engineering Research Center of Ecology and Agriculture Use of Wetland, Ministry of Education, Yangtze University, Jingzhou,434025 China
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238
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Dual Role of Metallic Trace Elements in Stress Biology-From Negative to Beneficial Impact on Plants. Int J Mol Sci 2019; 20:ijms20133117. [PMID: 31247908 PMCID: PMC6651804 DOI: 10.3390/ijms20133117] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Revised: 06/19/2019] [Accepted: 06/24/2019] [Indexed: 11/24/2022] Open
Abstract
Heavy metals are an interesting group of trace elements (TEs). Some of them are minutely required for normal plant growth and development, while others have unknown biological actions. They may cause injury when they are applied in an elevated concentration, regardless of the importance for the plant functioning. On the other hand, their application may help to alleviate various abiotic stresses. In this review, both the deleterious and beneficial effects of metallic trace elements from their uptake by roots and leaves, through toxicity, up to the regulation of physiological and molecular mechanisms that are associated with plant protection against stress conditions have been briefly discussed. We have highlighted the involvement of metallic ions in mitigating oxidative stress by the activation of various antioxidant enzymes and emphasized the phenomenon of low-dose stimulation that is caused by non-essential, potentially poisonous elements called hormesis, which is recently one of the most studied issues. Finally, we have described the evolutionary consequences of long-term exposure to metallic elements, resulting in the development of unique assemblages of vegetation, classified as metallophytes, which constitute excellent model systems for research on metal accumulation and tolerance. Taken together, the paper can provide a novel insight into the toxicity concept, since both dose- and genotype-dependent response to the presence of metallic trace elements has been comprehensively explained.
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239
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Liu S, Ali S, Yang R, Tao J, Ren B. A newly discovered Cd-hyperaccumulator Lantana camara L. JOURNAL OF HAZARDOUS MATERIALS 2019; 371:233-242. [PMID: 30852275 DOI: 10.1016/j.jhazmat.2019.03.016] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 01/28/2019] [Accepted: 03/04/2019] [Indexed: 05/22/2023]
Abstract
The identification of hyperaccumulators is a key step for the phytoextraction of contaminated soils. However, few cadmium (Cd) hyperaccumulators have been identified in the plant kingdom. In our previous field investigations, Lantana camara L. plants exhibited some traits of hyperaccumulators. To confirm whether this species is a Cd hyperaccumulator, laboratory dose-gradient experiments and field sample analysis experiments were first designed and implemented in an integrated manner. The results showed that lantana plants did not exhibit any visible damage or marked reduction in shoot biomass when grown in Cd-contaminated soil with less than 100 mg kg-1 Cd. Moreover, the lantana plants exhibited high Cd tolerance with effective coordination of photosynthesis and rapid reactive oxygen species scavenging. Most importantly, the bioaccumulation factors (BFs) and translocation factors (TFs) were greater than 1.0 in all the Cd treatments, while the Cd concentrations in the shoots were all greater than those in the roots and were also greater than 100 mg kg-1, the threshold value for a Cd hyperaccumulator. Our data provide comprehensive evidence that lantana plants have the typical characteristics of a Cd hyperaccumulator and thus can be regarded as potential Cd-hyperaccumulating plants for the restoration of Cd-polluted soils.
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Affiliation(s)
- Shiliang Liu
- College of Landscape Architecture, Sichuan Agricultural University, Wenjiang, Chengdu, Sichuan, 611130, China.
| | - Shafaqat Ali
- Department of Environmental Sciences and Engineering, Government College University, Faisalabad, 38000, Pakistan
| | - Rongjie Yang
- College of Landscape Architecture, Sichuan Agricultural University, Wenjiang, Chengdu, Sichuan, 611130, China
| | - Jianjun Tao
- College of Architecture and Urban & Rural Planning, Sichuan Agricultural University, Dujiangyan, Chengdu, Sichuan, 611830, China
| | - Bo Ren
- Institute of Biotechnology and Fine Variety Research, Sichuan Academy of Forestry, Chengdu, Sichuan, 610081, China
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240
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Ram H, Kaur A, Gandass N, Singh S, Deshmukh R, Sonah H, Sharma TR. Molecular characterization and expression dynamics of MTP genes under various spatio-temporal stages and metal stress conditions in rice. PLoS One 2019; 14:e0217360. [PMID: 31136613 PMCID: PMC6538162 DOI: 10.1371/journal.pone.0217360] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Accepted: 05/09/2019] [Indexed: 11/23/2022] Open
Abstract
Metal Tolerance Proteins (MTPs) are the class of membrane proteins involved in the transport of metals, mainly Zn, Mn, Fe, Cd, Co and Ni, and confer metal tolerance in plants. In the present study, a comprehensive molecular analysis of rice MTP genes was performed to understand the evolution, distribution and expression dynamics of MTP genes. Exploration of the whole genome re-sequencing information available for three thousand rice genotypes highlighted the evolution and allelic diversity of MTP genes. Based on the presence of non-synonymous single nucleotide polymorphism (SNP), MTP1, MTP6, MTP8 and MTP9 were found to be the most conserved genes. Furthermore, results showed localization of MTP1, MTP8.1 and MTP9, and MTP11, respectively with QTLs/m-QTLs for Zn and Cd accumulation, making these genes promising candidates to understand the QTL regulation. Expression profiling of the entire set of 10 MTP genes revealed root and shoot specific expressions of MTP9 and MTP8.1, respectively, under all tested vegetative stages. Expression of seed-specific MTPs increased as seed maturation progressed, which revealed their potential role in transporting metals during seed filling. Upon exposure to harmful heavy metals, expression of most MTP genes decreased in root and increased in shoot, suggests that different mechanisms are being employed by MTPs in different tissues. Contrastingly, only a few MTPs were found to be responsive to Fe and/or Zn starvation conditions. The extensive analysis of MTPs presented here will be helpful in identifying candidate MTP genes for crop biofortification and bioremediation purposes.
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Affiliation(s)
- Hasthi Ram
- Department of Agri-Biotechnology, National Agri-Food Biotechnology Institute (NABI), SAS Nagar(Mohali), Punjab, India
| | - Amandeep Kaur
- Department of Agri-Biotechnology, National Agri-Food Biotechnology Institute (NABI), SAS Nagar(Mohali), Punjab, India
| | - Nishu Gandass
- Department of Agri-Biotechnology, National Agri-Food Biotechnology Institute (NABI), SAS Nagar(Mohali), Punjab, India
| | - Shweta Singh
- Department of Agri-Biotechnology, National Agri-Food Biotechnology Institute (NABI), SAS Nagar(Mohali), Punjab, India
| | - Rupesh Deshmukh
- Department of Agri-Biotechnology, National Agri-Food Biotechnology Institute (NABI), SAS Nagar(Mohali), Punjab, India
| | - Humira Sonah
- Department of Agri-Biotechnology, National Agri-Food Biotechnology Institute (NABI), SAS Nagar(Mohali), Punjab, India
| | - Tilak Raj Sharma
- Department of Agri-Biotechnology, National Agri-Food Biotechnology Institute (NABI), SAS Nagar(Mohali), Punjab, India
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241
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van der Ent A, Echevarria G, Pollard AJ, Erskine PD. X-Ray Fluorescence Ionomics of Herbarium Collections. Sci Rep 2019; 9:4746. [PMID: 30894553 PMCID: PMC6426943 DOI: 10.1038/s41598-019-40050-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Accepted: 02/04/2019] [Indexed: 12/04/2022] Open
Abstract
Global herbaria are the greatest repositories of information on the plant kingdom. Discoveries of trace element hyperaccumulator plants have historically required time-consuming destructive chemical analysis of fragments from herbarium specimens, which severely constrains the collection of large datasets. Recent advances in handheld X-Ray Fluorescence spectroscopy (XRF) systems have enabled non-destructive analysis of plant samples and here we propose a new method, which we term “Herbarium XRF Ionomics”, to extract elemental data from herbarium specimens. We present two case studies from major tropical herbaria where Herbarium XRF Ionomics has led to the discovery of new hyperaccumulator plants and provided valuable insights into phylogenetic patterns of trace element hyperaccumulation. Herbarium XRF Ionomics is a new value proposition for continued funding and retention of herbarium specimens globally.
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Affiliation(s)
- Antony van der Ent
- Centre for Mined Land Rehabilitation, Sustainable Minerals Institute, The University of Queensland, Queensland, Australia.,Laboratoire Sols et Environnement, Université de Lorraine, Nancy, France
| | - Guillaume Echevarria
- Centre for Mined Land Rehabilitation, Sustainable Minerals Institute, The University of Queensland, Queensland, Australia.,Laboratoire Sols et Environnement, Université de Lorraine, Nancy, France
| | - A Joseph Pollard
- Department of Biology, Furman University, Greenville, South Carolina, USA
| | - Peter D Erskine
- Centre for Mined Land Rehabilitation, Sustainable Minerals Institute, The University of Queensland, Queensland, Australia.
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242
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Sanderson DV, Voutchkov M, Benkeblia N. Bioaccumulation of cadmium in potato tuber grown on naturally high levels cadmium soils in Jamaica. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 649:909-915. [PMID: 30179819 DOI: 10.1016/j.scitotenv.2018.08.220] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Revised: 06/27/2018] [Accepted: 08/17/2018] [Indexed: 06/08/2023]
Abstract
Jamaican soils have been reported to have naturally high level of cadmium (Cd), and its bioaccumulation in edible crops is of great concern for farmers, stakeholders, and public health authorities. The aim of this study was to determine the levels of Cd in soils in Jamaica and its bioaccumulation in potato tubers, and to determine the dominant soil factors influencing this bioaccumulation in potato. In addition, other soil factors were investigated such pH, electric conductivity (EC), cation exchange capacity (CEC), texture, organic matter content (OMC), and soil zinc (Zn) concentration. The soils' pH and Zn concentration were found to be the dominant factors influencing Cd accumulation in potato tubers, and this was confirmed by using a step-wise multiple regression analysis with the soil factors and tuber Cd (P < 0.05). With soil Cd ranging between 0.05 and 62.3 mg kg-1 and tuber Cd ranging between 0.01 and 0.22 mg kg-1 fresh weight, the bioaccumulation factor (BCF) of Cd in potato tuber gave a precise assessment of the influence of soil variables on Cd accumulation in potato tuber. The Cd concentration in potato tubers was found 50% higher than that recommended by the World Health Organization (WHO) regulation for potatoes (0.05 mg kg-1 fresh weight), and therefore, this should raise real concerns about the human health risk in Jamaica.
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Affiliation(s)
- Da-Vaugh Sanderson
- Department of Physics, Faculty of Science and Technology, The University of the West Indies, Mona Campus, Kingston 7, Jamaica
| | - Mitko Voutchkov
- Department of Physics, Faculty of Science and Technology, The University of the West Indies, Mona Campus, Kingston 7, Jamaica
| | - Noureddine Benkeblia
- Crop Science Laboratory, Department of Life Sciences, Faculty of Science and Technology, The University of the West Indies, Mona Campus, Kingston 7, Jamaica; Tree and Aromatic Crops Laboratory, The Biotechnology Centre, Faculty of Science and Technology, The University of the West Indies, Mona Campus, Kingston 7, Jamaica.
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243
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van der Pas L, Ingle RA. Towards an Understanding of the Molecular Basis of Nickel Hyperaccumulation in Plants. PLANTS (BASEL, SWITZERLAND) 2019; 8:E11. [PMID: 30621231 PMCID: PMC6359332 DOI: 10.3390/plants8010011] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 12/28/2018] [Accepted: 12/31/2018] [Indexed: 12/19/2022]
Abstract
Metal hyperaccumulation is a rare and fascinating phenomenon, whereby plants actively accumulate high concentrations of metal ions in their above-ground tissues. Enhanced uptake and root-to-shoot translocation of specific metal ions coupled with an increased capacity for detoxification and sequestration of these ions are thought to constitute the physiological basis of the hyperaccumulation phenotype. Nickel hyperaccumulators were the first to be discovered and are the most numerous, accounting for some seventy-five percent of all known hyperaccumulators. However, our understanding of the molecular basis of the physiological processes underpinning Ni hyperaccumulation has lagged behind that of Zn and Cd hyperaccumulation, in large part due to a lack of genomic resources for Ni hyperaccumulators. The advent of RNA-Seq technology, which allows both transcriptome assembly and profiling of global gene expression without the need for a reference genome, has offered a new route for the analysis of Ni hyperaccumulators, and several such studies have recently been reported. Here we review the current state of our understanding of the molecular basis of Ni hyperaccumulation in plants, with an emphasis on insights gained from recent RNA-Seq experiments, highlight commonalities and differences between Ni hyperaccumulators, and suggest potential future avenues of research in this field.
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Affiliation(s)
- Llewelyn van der Pas
- Department of Molecular and Cell Biology, University of Cape Town, Rondebosch 7701, South Africa.
| | - Robert A Ingle
- Department of Molecular and Cell Biology, University of Cape Town, Rondebosch 7701, South Africa.
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244
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van der Ent A, Mak R, de Jonge MD, Harris HH. Simultaneous hyperaccumulation of nickel and cobalt in the tree Glochidion cf. sericeum (Phyllanthaceae): elemental distribution and chemical speciation. Sci Rep 2018; 8:9683. [PMID: 29946061 PMCID: PMC6018747 DOI: 10.1038/s41598-018-26891-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Accepted: 04/25/2018] [Indexed: 11/08/2022] Open
Abstract
Hyperaccumulation is generally highly specific for a single element, for example nickel (Ni). The recently-discovered hyperaccumulator Glochidion cf. sericeum (Phyllanthaceae) from Malaysia is unusual in that it simultaneously accumulates nickel and cobalt (Co) with up to 1500 μg g-1 foliar of both elements. We set out to determine whether distribution and associated ligands for Ni and Co complexation differ in this species. We postulated that Co hyperaccumulation coincides with Ni hyperaccumulation operating on similar physiological pathways. However, the ostensibly lower tolerance for Co at the cellular level results in the exudation of Co on the leaf surface in the form of lesions. The formation of such lesions is akin to phytotoxicity responses described for manganese (Mn). Hence, in contrast to Ni, which is stored principally inside the foliar epidermal cells, the accumulation response to Co consists of an extracellular mechanism. The chemical speciation of Ni and Co, in terms of the coordinating ligands involved and principal oxidation state, is similar and associated with carboxylic acids (citrate for Ni and tartrate or malate for Co) and the hydrated metal ion. Some oxidation to Co3+, presumably on the surface of leaves after exudation, was observed.
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Affiliation(s)
- Antony van der Ent
- Centre for Mined Land Rehabilitation, Sustainable Minerals Institute, The University of Queensland, St Lucia QLD, Australia.
- Laboratoire Sols et Environnement, Université de Lorraine, Nancy, France.
| | - Rachel Mak
- Department of Chemistry, University of Sydney, Camperdown, Australia
| | | | - Hugh H Harris
- Department of Chemistry, The University of Adelaide, Adelaide, Australia.
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245
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Jaffré T, Reeves RD, Baker AJM, Schat H, van der Ent A. The discovery of nickel hyperaccumulation in the New Caledonian tree Pycnandra acuminata 40 years on: an introduction to a Virtual Issue. THE NEW PHYTOLOGIST 2018; 218:397-400. [PMID: 29561072 DOI: 10.1111/nph.15105] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Affiliation(s)
- Tanguy Jaffré
- Institut de Recherche pour le Développement (IRD), UMR AMAP, Herbarium NOU, Nouméa, 98848, New Caledonia
| | | | - Alan J M Baker
- Centre for Mined Land Rehabilitation, The University of Queensland, St Lucia, Queensland, 4072, Australia
- Laboratoire Sols et Environnement, Université de Lorraine/INRA, Vandoeuvre-lès-Nancy, France
| | - Henk Schat
- Department of Ecological Sciences, Faculty of Earth and Life Sciences, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
- Laboratory of Genetics, Wageningen University, Wageningen, the Netherlands
| | - Antony van der Ent
- Centre for Mined Land Rehabilitation, The University of Queensland, St Lucia, Queensland, 4072, Australia
- Laboratoire Sols et Environnement, Université de Lorraine/INRA, Vandoeuvre-lès-Nancy, France
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246
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Bouman R, van Welzen P, Sumail S, Echevarria G, Erskine PD, van der Ent A. Phyllanthus rufuschaneyi: a new nickel hyperaccumulator from Sabah (Borneo Island) with potential for tropical agromining. BOTANICAL STUDIES 2018; 59:9. [PMID: 29589161 PMCID: PMC5869324 DOI: 10.1186/s40529-018-0225-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Accepted: 03/17/2018] [Indexed: 05/27/2023]
Abstract
BACKGROUND Nickel hyperaccumulator plants are of much interest for their evolution and unique ecophysiology, and also for potential applications in agromining-a novel technology that uses plants to extract valuable metals from soil. The majority of nickel hyperaccumulators are known from ultramafic soils in tropical regions (Cuba, New Caledonia and Southeast Asia), and one genus, Phyllanthus (Phyllanthaceae), is globally the most represented taxonomic entity. A number of tropical Phyllanthus-species have the potential to be used as 'metal crops' in agromining operations mainly because of their ease in cultivation and their ability to attain high nickel concentrations and biomass yields. RESULTS One of the most promising species globally for agromining, is the here newly described species Phyllanthus rufuschaneyi. This species can be classified in subgenus Gomphidium on account of its staminate nectar disc and pistillate entire style and represents the most western species of this diverse group. The flower structure indicates that this species is probably pollinated by Epicephala moths. CONCLUSIONS Phyllanthus rufuschaneyi is an extremely rare taxon in the wild, restricted to Lompoyou Hill near Kinabalu Park in Sabah, Malaysia. Its utilization in agromining will be a mechanism for conservation of the taxon, and highlights the importance of habitat and germplasm preservation if rare species are to be used in novel green technologies.
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Affiliation(s)
- Roderick Bouman
- Naturalis Biodiversity Center, Botany, 2300 RA The Netherlands
- Hortus Botanicus, Leiden University, Leiden, 2311 GJ The Netherlands
- Institute of Biology Leiden, Leiden University, Leiden, 2300 RA The Netherlands
| | - Peter van Welzen
- Naturalis Biodiversity Center, Botany, 2300 RA The Netherlands
- Institute of Biology Leiden, Leiden University, Leiden, 2300 RA The Netherlands
| | | | - Guillaume Echevarria
- Laboratoire Sols et Environnement, Université de Lorraine, INRA, Nancy, 54000 France
| | - Peter D. Erskine
- Centre for Mined Land Rehabilitation, Sustainable Minerals Institute, The University of Queensland, St Lucia, QLD 4072 Australia
| | - Antony van der Ent
- Laboratoire Sols et Environnement, Université de Lorraine, INRA, Nancy, 54000 France
- Centre for Mined Land Rehabilitation, Sustainable Minerals Institute, The University of Queensland, St Lucia, QLD 4072 Australia
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247
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van der Ent A, Mulligan DR, Repin R, Erskine PD. Foliar elemental profiles in the ultramafic flora of Kinabalu Park (Sabah, Malaysia). Ecol Res 2018. [DOI: 10.1007/s11284-018-1563-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Interactions of the manganese hyperaccumulator Phytolacca americana L. with soil pH and phosphate. Ecol Res 2017. [DOI: 10.1007/s11284-017-1547-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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